Fix message created/updated initialization

Backend/AMQPBackend.php

@@ -124,7 +124,6 @@ public function create($type, array $body)
         $message->setType($type);
         $message->setBody($body);
         $message->setState(MessageInterface::STATE_OPEN);
-        $message->setCreatedAt(new \DateTime);
 
         return $message;
     }

Entity/Message.php

@@ -20,12 +20,6 @@ class Message extends BaseMessage
      */
     protected $id;
 
-    public function __construct()
-    {
-        $this->createdAt = new \DateTime();
-        $this->updatedAt = new \DateTime();
-    }
-
     /**
      * Get id
      *

Model/Message.php

@@ -29,6 +29,12 @@ class Message implements MessageInterface
 
     protected $completedAt;
 
+    public function __construct()
+    {
+        $this->createdAt = new \DateTime();
+        $this->updatedAt = new \DateTime();
+    }
+
     /**
      * {@inheritdoc}
      */