Update StompQueue.php (#35)

fix

src/Queue/StompQueue.php

@@ -505,7 +505,7 @@ protected function subscribeToQueues(): void
                 $winSize = -1;
             }
 
-            $this->client->subscribe($queue, null, this->_ackMode, [
+            $this->client->subscribe($queue, null, $this->_ackMode, [
                 // New Artemis version can't work without this as it will consume only first message otherwise.
                 //'consumer-window-size' => '-1',
                 // we can define this if we are using ack mode = client