[glib] gio: hide another leaked symbol

[Ryan Lortie <ryanl src gnome org>]

commit 38359d1796d8bce43fb77c74adaaf664bcf82c21
Author: Ryan Lortie <desrt desrt ca>
Date:   Sun Jan 13 22:57:27 2013 -0500

    gio: hide another leaked symbol
    
    guint g_menu_model_items_changed_signal leaked out.  Tuck it back in.

 gio/gio.symbols  |    1 -
 gio/gmenumodel.c |    2 +-
 2 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/gio/gio.symbols b/gio/gio.symbols
index 3ae21bd..6bb53bd 100644
--- a/gio/gio.symbols
+++ b/gio/gio.symbols
@@ -1730,7 +1730,6 @@ g_menu_model_get_n_items
 g_menu_model_get_type
 g_menu_model_is_mutable
 g_menu_model_items_changed
-g_menu_model_items_changed_signal
 g_menu_model_iterate_item_attributes
 g_menu_model_iterate_item_links
 g_menu_new
diff --git a/gio/gmenumodel.c b/gio/gmenumodel.c
index 658195b..17cab30 100644
--- a/gio/gmenumodel.c
+++ b/gio/gmenumodel.c
@@ -303,7 +303,7 @@ g_menu_attribute_hash_iter_class_init (GMenuAttributeHashIterClass *class)
 G_DEFINE_ABSTRACT_TYPE (GMenuModel, g_menu_model, G_TYPE_OBJECT)
 
 
-guint g_menu_model_items_changed_signal;
+static guint g_menu_model_items_changed_signal;
 
 static GMenuAttributeIter *
 g_menu_model_real_iterate_item_attributes (GMenuModel *model,