[gtk+/wip/gtkmenutrackeritem] Fix a leak in GtkMenuTrackerItem

[Ryan Lortie <ryanl src gnome org>]

commit 55ae0882eb74dd3b98e63cf3126cc87c6c93fc25
Author: Ryan Lortie <desrt desrt ca>
Date:   Wed May 8 17:13:34 2013 -0400

    Fix a leak in GtkMenuTrackerItem

 gtk/gtkmenutrackeritem.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkmenutrackeritem.c b/gtk/gtkmenutrackeritem.c
index 24d5043..88b4739 100644
--- a/gtk/gtkmenutrackeritem.c
+++ b/gtk/gtkmenutrackeritem.c
@@ -107,6 +107,8 @@ gtk_menu_tracker_item_finalize (GObject *object)
 {
   GtkMenuTrackerItem *self = GTK_MENU_TRACKER_ITEM (object);
 
+  g_free (self->action_namespace);
+
   if (self->observable)
     g_object_unref (self->observable);