declare constructor argument as optional for backwards compatibility

Author: xabbuh

src/Symfony/Component/Messenger/Exception/DelayedMessageHandlingException.php

@@ -22,9 +22,9 @@
 class DelayedMessageHandlingException extends RuntimeException
 {
     private array $exceptions;
-    private Envelope $envelope;
+    private ?Envelope $envelope;
 
-    public function __construct(array $exceptions, Envelope $envelope)
+    public function __construct(array $exceptions, Envelope $envelope = null)
     {
         $this->envelope = $envelope;
 
@@ -49,7 +49,7 @@ public function getExceptions(): array
         return $this->exceptions;
     }
 
-    public function getEnvelope(): Envelope
+    public function getEnvelope(): ?Envelope
     {
         return $this->envelope;
     }

src/Symfony/Component/Messenger/Worker.php

@@ -187,7 +187,7 @@ private function ack(): bool
                     $receiver->reject($envelope);
                 }
 
-                if ($e instanceof HandlerFailedException || $e instanceof DelayedMessageHandlingException) {
+                if ($e instanceof HandlerFailedException || ($e instanceof DelayedMessageHandlingException && null !== $e->getEnvelope())) {
                     $envelope = $e->getEnvelope();
                 }