iterator methods fixes (patch 1164808)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@32876 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk1/window.cpp

@@ -4021,7 +4021,7 @@ void wxWindowGTK::GtkSendPaintEvents()
                             (char *)"base",
                             0, 0, -1, -1 );
 
-                upd ++;
+                ++upd;
             }
         }
     }