set the event object of the menu events to the frame the menu is attached to instead of the menu itself for compatibility with wxMSW

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@49609 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/menu.cpp

@@ -611,7 +611,6 @@ static void gtk_menu_clicked_callback( GtkWidget *widget, wxMenu *menu )
         commandEvent.SetEventObject(frame);
         if (item->IsCheckable())
             commandEvent.SetInt(item->IsChecked());
-        commandEvent.SetEventObject(menu);
 
         frame->GetEventHandler()->ProcessEvent(commandEvent);
     }