avoid compile error on GTK+ 2.10

diff --git a/src/xo-misc.c b/src/xo-misc.c
index 4f51d85bf008bcc90acaeca4ee36b968c7c30495..bc4747cd35e28d75c26f1738610c599e13fada41 100644 (file)
--- a/src/xo-misc.c
+++ b/src/xo-misc.c
@@ -1673,6 +1673,10 @@ void process_paperstyle_activate(GtkMenuItem *menuitem, int style)
   if (must_upd) update_page_stuff();
 }
 
+#ifndef GTK_STOCK_DISCARD
+#define GTK_STOCK_DISCARD GTK_STOCK_NO
+#endif
+
 gboolean ok_to_close(void)
 {
   GtkWidget *dialog;