Fix implicitly nullable type declarations in SwiftMailer

SwiftMailer는 지원이 종료되었으므로 차기 버전에서 Symfony Mailer로 교체 예정

common/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Encoder/QpEncoder.php

@@ -106,7 +106,7 @@ class Swift_Encoder_QpEncoder implements Swift_Encoder
      * @param Swift_CharacterStream $charStream to use for reading characters
      * @param Swift_StreamFilter    $filter     if input should be canonicalized
      */
-    public function __construct(Swift_CharacterStream $charStream, Swift_StreamFilter $filter = null)
+    public function __construct(Swift_CharacterStream $charStream, ?Swift_StreamFilter $filter = null)
     {
         $this->charStream = $charStream;
         if (!isset(self::$safeMapShare[$this->getSafeMapShareId()])) {

common/vendor/swiftmailer/swiftmailer/lib/classes/Swift/KeyCache.php

@@ -56,7 +56,7 @@ interface Swift_KeyCache
      *
      * @return Swift_InputByteStream
      */
-    public function getInputByteStream($nsKey, $itemKey, Swift_InputByteStream $is = null);
+    public function getInputByteStream($nsKey, $itemKey, ?Swift_InputByteStream $is = null);
 
     /**
      * Get data back out of the cache as a string.

common/vendor/swiftmailer/swiftmailer/lib/classes/Swift/KeyCache/ArrayKeyCache.php

@@ -105,7 +105,7 @@ class Swift_KeyCache_ArrayKeyCache implements Swift_KeyCache
      *
      * @return Swift_InputByteStream
      */
-    public function getInputByteStream($nsKey, $itemKey, Swift_InputByteStream $writeThrough = null)
+    public function getInputByteStream($nsKey, $itemKey, ?Swift_InputByteStream $writeThrough = null)
     {
         $is = clone $this->stream;
         $is->setKeyCache($this);

common/vendor/swiftmailer/swiftmailer/lib/classes/Swift/KeyCache/DiskKeyCache.php

@@ -128,7 +128,7 @@ class Swift_KeyCache_DiskKeyCache implements Swift_KeyCache
      *
      * @return Swift_InputByteStream
      */
-    public function getInputByteStream($nsKey, $itemKey, Swift_InputByteStream $writeThrough = null)
+    public function getInputByteStream($nsKey, $itemKey, ?Swift_InputByteStream $writeThrough = null)
     {
         $is = clone $this->stream;
         $is->setKeyCache($this);

common/vendor/swiftmailer/swiftmailer/lib/classes/Swift/KeyCache/NullKeyCache.php

@@ -52,7 +52,7 @@ class Swift_KeyCache_NullKeyCache implements Swift_KeyCache
      *
      * @return Swift_InputByteStream
      */
-    public function getInputByteStream($nsKey, $itemKey, Swift_InputByteStream $writeThrough = null)
+    public function getInputByteStream($nsKey, $itemKey, ?Swift_InputByteStream $writeThrough = null)
     {
     }
 

common/vendor/swiftmailer/swiftmailer/lib/classes/Swift/KeyCache/SimpleKeyCacheInputStream.php

@@ -49,7 +49,7 @@ class Swift_KeyCache_SimpleKeyCacheInputStream implements Swift_KeyCache_KeyCach
      * @param string                $bytes
      * @param Swift_InputByteStream $is    optional
      */
-    public function write($bytes, Swift_InputByteStream $is = null)
+    public function write($bytes, ?Swift_InputByteStream $is = null)
     {
         $this->keyCache->setString(
             $this->nsKey, $this->itemKey, $bytes, Swift_KeyCache::MODE_APPEND

common/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/ContentEncoder/QpContentEncoder.php

@@ -24,7 +24,7 @@ class Swift_Mime_ContentEncoder_QpContentEncoder extends Swift_Encoder_QpEncoder
      * @param Swift_StreamFilter    $filter     if canonicalization should occur
      * @param bool                  $dotEscape  if dot stuffing workaround must be enabled
      */
-    public function __construct(Swift_CharacterStream $charStream, Swift_StreamFilter $filter = null, $dotEscape = false)
+    public function __construct(Swift_CharacterStream $charStream, ?Swift_StreamFilter $filter = null, $dotEscape = false)
     {
         $this->dotEscape = $dotEscape;
         parent::__construct($charStream, $filter);

common/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/Headers/AbstractHeader.php

@@ -200,7 +200,7 @@ abstract class Swift_Mime_Headers_AbstractHeader implements Swift_Mime_Header
      *
      * @return string
      */
-    protected function createPhrase(Swift_Mime_Header $header, $string, $charset, Swift_Mime_HeaderEncoder $encoder = null, $shorten = false)
+    protected function createPhrase(Swift_Mime_Header $header, $string, $charset, ?Swift_Mime_HeaderEncoder $encoder = null, $shorten = false)
     {
         // Treat token as exactly what was given
         $phraseStr = $string;

common/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/Headers/IdentificationHeader.php

@@ -42,7 +42,7 @@ class Swift_Mime_Headers_IdentificationHeader extends Swift_Mime_Headers_Abstrac
      *
      * @param string $name
      */
-    public function __construct($name, EmailValidator $emailValidator, Swift_AddressEncoder $addressEncoder = null)
+    public function __construct($name, EmailValidator $emailValidator, ?Swift_AddressEncoder $addressEncoder = null)
     {
         $this->setFieldName($name);
         $this->emailValidator = $emailValidator;

common/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/Headers/MailboxHeader.php

@@ -39,7 +39,7 @@ class Swift_Mime_Headers_MailboxHeader extends Swift_Mime_Headers_AbstractHeader
      *
      * @param string $name of Header
      */
-    public function __construct($name, Swift_Mime_HeaderEncoder $encoder, EmailValidator $emailValidator, Swift_AddressEncoder $addressEncoder = null)
+    public function __construct($name, Swift_Mime_HeaderEncoder $encoder, EmailValidator $emailValidator, ?Swift_AddressEncoder $addressEncoder = null)
     {
         $this->setFieldName($name);
         $this->setEncoder($encoder);

common/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/Headers/ParameterizedHeader.php

@@ -41,7 +41,7 @@ class Swift_Mime_Headers_ParameterizedHeader extends Swift_Mime_Headers_Unstruct
      *
      * @param string $name
      */
-    public function __construct($name, Swift_Mime_HeaderEncoder $encoder, Swift_Encoder $paramEncoder = null)
+    public function __construct($name, Swift_Mime_HeaderEncoder $encoder, ?Swift_Encoder $paramEncoder = null)
     {
         parent::__construct($name, $encoder);
         $this->paramEncoder = $paramEncoder;

common/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/Headers/PathHeader.php

@@ -39,7 +39,7 @@ class Swift_Mime_Headers_PathHeader extends Swift_Mime_Headers_AbstractHeader
      *
      * @param string $name
      */
-    public function __construct($name, EmailValidator $emailValidator, Swift_AddressEncoder $addressEncoder = null)
+    public function __construct($name, EmailValidator $emailValidator, ?Swift_AddressEncoder $addressEncoder = null)
     {
         $this->setFieldName($name);
         $this->emailValidator = $emailValidator;

common/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/SimpleHeaderFactory.php

@@ -37,7 +37,7 @@ class Swift_Mime_SimpleHeaderFactory implements Swift_Mime_CharsetObserver
      *
      * @param string|null $charset
      */
-    public function __construct(Swift_Mime_HeaderEncoder $encoder, Swift_Encoder $paramEncoder, EmailValidator $emailValidator, $charset = null, Swift_AddressEncoder $addressEncoder = null)
+    public function __construct(Swift_Mime_HeaderEncoder $encoder, Swift_Encoder $paramEncoder, EmailValidator $emailValidator, $charset = null, ?Swift_AddressEncoder $addressEncoder = null)
     {
         $this->encoder = $encoder;
         $this->paramEncoder = $paramEncoder;
@@ -72,7 +72,7 @@ class Swift_Mime_SimpleHeaderFactory implements Swift_Mime_CharsetObserver
      *
      * @return Swift_Mime_Header
      */
-    public function createDateHeader($name, DateTimeInterface $dateTime = null)
+    public function createDateHeader($name, ?DateTimeInterface $dateTime = null)
     {
         $header = new Swift_Mime_Headers_DateHeader($name);
         if (isset($dateTime)) {

common/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/SimpleHeaderSet.php

@@ -76,7 +76,7 @@ class Swift_Mime_SimpleHeaderSet implements Swift_Mime_CharsetObserver
      *
      * @param string $name
      */
-    public function addDateHeader($name, DateTimeInterface $dateTime = null)
+    public function addDateHeader($name, ?DateTimeInterface $dateTime = null)
     {
         $this->storeHeader($name, $this->factory->createDateHeader($name, $dateTime));
     }

common/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Plugins/AntiFloodPlugin.php

@@ -50,7 +50,7 @@ class Swift_Plugins_AntiFloodPlugin implements Swift_Events_SendListener, Swift_
      * @param int                   $sleep     time
      * @param Swift_Plugins_Sleeper $sleeper   (not needed really)
      */
-    public function __construct($threshold = 99, $sleep = 0, Swift_Plugins_Sleeper $sleeper = null)
+    public function __construct($threshold = 99, $sleep = 0, ?Swift_Plugins_Sleeper $sleeper = null)
     {
         $this->setThreshold($threshold);
         $this->setSleepTime($sleep);

common/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Plugins/ThrottlerPlugin.php

@@ -76,7 +76,7 @@ class Swift_Plugins_ThrottlerPlugin extends Swift_Plugins_BandwidthMonitorPlugin
      * @param Swift_Plugins_Sleeper $sleeper (only needed in testing)
      * @param Swift_Plugins_Timer   $timer   (only needed in testing)
      */
-    public function __construct($rate, $mode = self::BYTES_PER_MINUTE, Swift_Plugins_Sleeper $sleeper = null, Swift_Plugins_Timer $timer = null)
+    public function __construct($rate, $mode = self::BYTES_PER_MINUTE, ?Swift_Plugins_Sleeper $sleeper = null, ?Swift_Plugins_Timer $timer = null)
     {
         $this->rate = $rate;
         $this->mode = $mode;

common/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php

@@ -46,7 +46,7 @@ abstract class Swift_Transport_AbstractSmtpTransport implements Swift_Transport
      *
      * @param string $localDomain
      */
-    public function __construct(Swift_Transport_IoBuffer $buf, Swift_Events_EventDispatcher $dispatcher, $localDomain = '127.0.0.1', Swift_AddressEncoder $addressEncoder = null)
+    public function __construct(Swift_Transport_IoBuffer $buf, Swift_Events_EventDispatcher $dispatcher, $localDomain = '127.0.0.1', ?Swift_AddressEncoder $addressEncoder = null)
     {
         $this->buffer = $buf;
         $this->eventDispatcher = $dispatcher;

common/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/EsmtpTransport.php

@@ -51,7 +51,7 @@ class Swift_Transport_EsmtpTransport extends Swift_Transport_AbstractSmtpTranspo
      * @param Swift_Transport_EsmtpHandler[] $extensionHandlers
      * @param string                         $localDomain
      */
-    public function __construct(Swift_Transport_IoBuffer $buf, array $extensionHandlers, Swift_Events_EventDispatcher $dispatcher, $localDomain = '127.0.0.1', Swift_AddressEncoder $addressEncoder = null)
+    public function __construct(Swift_Transport_IoBuffer $buf, array $extensionHandlers, Swift_Events_EventDispatcher $dispatcher, $localDomain = '127.0.0.1', ?Swift_AddressEncoder $addressEncoder = null)
     {
         parent::__construct($buf, $dispatcher, $localDomain, $addressEncoder);
         $this->setExtensionHandlers($extensionHandlers);

common/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/SendmailTransport.php

@@ -36,7 +36,7 @@ class Swift_Transport_SendmailTransport extends Swift_Transport_AbstractSmtpTran
      *
      * @param string $localDomain
      */
-    public function __construct(Swift_Transport_IoBuffer $buf, Swift_Events_EventDispatcher $dispatcher, $localDomain = '127.0.0.1', Swift_AddressEncoder $addressEncoder = null)
+    public function __construct(Swift_Transport_IoBuffer $buf, Swift_Events_EventDispatcher $dispatcher, $localDomain = '127.0.0.1', ?Swift_AddressEncoder $addressEncoder = null)
     {
         parent::__construct($buf, $dispatcher, $localDomain, $addressEncoder);
     }

common/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/SpoolTransport.php

@@ -24,7 +24,7 @@ class Swift_Transport_SpoolTransport implements Swift_Transport
     /**
      * Constructor.
      */
-    public function __construct(Swift_Events_EventDispatcher $eventDispatcher, Swift_Spool $spool = null)
+    public function __construct(Swift_Events_EventDispatcher $eventDispatcher, ?Swift_Spool $spool = null)
     {
         $this->eventDispatcher = $eventDispatcher;
         $this->spool = $spool;