[gtk+] entry: guard for != NULL before unreffing the pixbuf

[Cosimo Cecchi <cosimoc src gnome org>]

commit f30eab099bdc4044738c6df77fa6088abc666961
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Sun Jul 8 00:27:30 2012 -0400

    entry: guard for != NULL before unreffing the pixbuf
    
    In gtk_entry_get_icon_pixbuf() we unreference the pixbuf that
    _gtk_icon_helper_ensure_pixbuf() gives us back, since the function
    doesn't return a reference, and by doing so we're able to return the
    reference owned by the cached icon helper.
    Since the icon helper method can return NULL though, if no icon
    properties have been set on it, guard for != NULL before unreffing the
    pixbuf, as that would cause a critical warning.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=679537

 gtk/gtkentry.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkentry.c b/gtk/gtkentry.c
index ef58c2e..db83f05 100644
--- a/gtk/gtkentry.c
+++ b/gtk/gtkentry.c
@@ -7946,7 +7946,8 @@ gtk_entry_get_icon_pixbuf (GtkEntry             *entry,
    * the icon helper's cache ref directly.
    */
   pixbuf = gtk_entry_ensure_pixbuf (entry, icon_pos);
-  g_object_unref (pixbuf);
+  if (pixbuf)
+    g_object_unref (pixbuf);
 
   return pixbuf;
 }