add emission hook from RemoveIdleSource (was RemoveIdleTag); minor cleanup

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41082 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/evtloop.cpp

@@ -101,7 +101,7 @@ bool wxEventLoop::Pending() const
     {
         // We need to remove idle callbacks or gtk_events_pending will
         // never return false.
-        wxTheApp->RemoveIdleTag();
+        wxTheApp->RemoveIdleSource();
     }
 
     return gtk_events_pending();