From b5dff5e41701a1ad0521b820ef99e33fa2a6f9ff Mon Sep 17 00:00:00 2001
From: Juan Pablo Ugarte <juanpablougarte@gmail.com>
Date: Thu, 28 Nov 2013 16:56:11 -0300
Subject: [PATCH] GtkIconCache: find_image_offset() return 0 if icon_name is
 NULL. This avoid a crash calling gtk_about_dialog_set_logo_icon_name() with a
 NULL icon_name.

---
 gtk/gtkiconcache.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gtk/gtkiconcache.c b/gtk/gtkiconcache.c
index 09aaa1b44e..4eaff97b65 100644
--- a/gtk/gtkiconcache.c
+++ b/gtk/gtkiconcache.c
@@ -235,6 +235,9 @@ find_image_offset (GtkIconCache *cache,
   guint32 image_list_offset, n_images;
   int i;
 
+  if (!icon_name)
+    return 0;
+
   chain_offset = cache->last_chain_offset;
   if (chain_offset)
     {