File gtk-warn.patch of Package gtk2

--- modules/printbackends/cups/gtkprintbackendcups.c
+++ modules/printbackends/cups/gtkprintbackendcups.c
@@ -36,6 +36,7 @@
 #include <cairo-ps.h>
 
 #include <glib/gi18n-lib.h>
+#include <glib/gstdio.h>
 #include <gmodule.h>
 
 #include <gtk/gtkprintoperation.h>