Fix a event signal emit bug.

src/event/EventCenter.cpp

@@ -10,6 +10,7 @@ void EventCenter::triggerEvent(GUIEvents event, QObject *sender, QObject *data)
         case GUIEvents:: val :\
         {\
             emit val(sender,data);\
+            break;\
         }
         ADD_EVENT()
         #undef ADD_EVENT_VALUE