Fixed topic gc bug

src/Broker/TopicManager.php

@@ -69,7 +69,7 @@ class TopicManager
             $this->topics,
             function (Topic $topic) {
                 $topic->garbageCollect();
-                return ($topic->getHistorySize() > 0 && $topic->getSubscriberCount() > 0) || ($topic->getAge() < 60);
+                return ($topic->getHistorySize() > 0 || $topic->getSubscriberCount() > 0) || ($topic->getAge() < 60);
             }
         );
     }