[gtk+] iconhelper: Fix leak when rendering to cairo surface

[Bastien Nocera <hadess src gnome org>]

commit 744b790fdb655f87450f20c5745bbaf1693bf7d7
Author: Bastien Nocera <hadess hadess net>
Date:   Wed Oct 2 15:33:20 2013 +0200

    iconhelper: Fix leak when rendering to cairo surface
    
    https://bugzilla.gnome.org/show_bug.cgi?id=709264

 gtk/gtkiconhelper.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkiconhelper.c b/gtk/gtkiconhelper.c
index 397ba2f..cda1e99 100644
--- a/gtk/gtkiconhelper.c
+++ b/gtk/gtkiconhelper.c
@@ -667,6 +667,7 @@ ensure_stated_surface_from_info (GtkIconHelper *self,
        (gdk_pixbuf_get_width (destination) + scale - 1) / scale;
       self->priv->rendered_surface_height = 
        (gdk_pixbuf_get_height (destination) + scale - 1) / scale;
+      g_object_unref (destination);
     }
 
   self->priv->rendered_surface = surface;