(hopefully) fixed race condition in installing idle handler (calling wxPostEvent from non-main thread)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@30266 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk1/evtloop.cpp

@@ -109,8 +109,7 @@ bool wxEventLoop::Pending() const
     {
         // We need to remove idle callbacks or gtk_events_pending will
         // never return false.
-        gtk_idle_remove( wxTheApp->m_idleTag );
-        wxTheApp->m_idleTag = 0;
+        wxTheApp->RemoveIdleTag();
         g_isIdle = TRUE;
     }