GtkMyFixed is now more "GTK 1.2.3 ready".

Test added to notebook sample (showing that GTK
  1.2.3 is not GTK 1.2.3 ready).
  Touched frame?


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2523 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/frame.cpp

@@ -789,7 +789,7 @@ void wxFrame::OnSize( wxSizeEvent &WXUNUSED(event) )
         {
             /* yes: set it's size to fill all the frame */
             int client_x, client_y;
-            GetClientSize( &client_x, &client_y );
+            DoGetClientSize( &client_x, &client_y );
             child->SetSize( 1, 1, client_x-2, client_y-2 );
         }
     }