+
+ // Notice that we can only release the mask now, we can't do it before
+ // the calls to gdk_draw_xxx() above as they crash with X error with
+ // GTK+ up to 2.20.1 (i.e. it works with 2.20 but is known to not work
+ // with 2.16.1 and below).
+ if (mask_new)
+ g_object_unref(mask_new);
+ }