[muc] Also process destory message if it contains <status/>

Fixes SMACK-915

smack-extensions/src/main/java/org/jivesoftware/smackx/muc/MultiUserChat.java

@@ -259,6 +259,7 @@ public class MultiUserChat {
                                 listener.left(from);
                             }
                         }
+                    }
 
                     Destroy destroy = mucUser.getDestroy();
                     // The room has been destroyed.
@@ -275,7 +276,7 @@ public class MultiUserChat {
                             listener.roomDestroyed(alternateMuc, destroy.getReason());
                         }
                     }
-                    }
+
                     if (isUserStatusModification) {
                         for (UserStatusListener listener : userStatusListeners) {
                             listener.removed(mucUser, presence);