More invalid source fixes

https://bugzilla.gnome.org/show_bug.cgi?id=711732

js/ui/appDisplay.js

@@ -1355,7 +1355,9 @@ const AppIcon = new Lang.Class({
             this._removeMenuTimeout();
             this._menuTimeoutId = Mainloop.timeout_add(MENU_POPUP_TIMEOUT,
                 Lang.bind(this, function() {
+                    this._menuTimeoutId = 0;
                     this.popupMenu();
+                    return false;
                 }));
         } else if (button == 3) {
             this.popupMenu();