fix #208,crash on exit through quit button

app/dockview.cpp

@@ -695,11 +695,15 @@ bool DockView::event(QEvent *e)
 {
     emit eventTriggered(e);
 
-    if (e->type() == QEvent::Leave) {
+    //Important! this code creates a crash when there are two docks
+    //running and the user clicks the Quit button, it is also
+    //suspicious for some rare cases when removing a dock and the
+    //dock is deleted after the 1min time limit of plasma
+    /*if (e->type() == QEvent::Leave) {
         engine()->collectGarbage();
         engine()->clearComponentCache();
         engine()->trimComponentCache();
-    }
+    }*/
 
     return ContainmentView::event(e);
 }