Fixed an error in the call to gtk_menu_popup() which was causing popup menus to fail on GTK 2.0.
Fixed an error in the call to gtk_menu_popup() which was causing popup
menus to fail on GTK 2.0.

OS2World/LIB-DynamicWindows,OS2World/LIB-DynamicWindows,OS2World/LIB-DynamicWindows