[gtkmm] Gtk::HeaderBar::get_show_close_button made const

[Kjell Ahlstedt <kjellahl src gnome org>]

commit 580900878b025b8de88af498838b605a5131cfff
Author: Juan Rafael García Blanco <juanrgar gmail com>
Date:   Sat Oct 5 09:21:52 2013 +0200

    Gtk::HeaderBar::get_show_close_button made const

 gtk/src/headerbar.hg |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/src/headerbar.hg b/gtk/src/headerbar.hg
index a326713..bbdac56 100644
--- a/gtk/src/headerbar.hg
+++ b/gtk/src/headerbar.hg
@@ -59,7 +59,7 @@ public:
   _WRAP_METHOD(void pack_end(Gtk::Widget& child), gtk_header_bar_pack_end)
 
   _WRAP_METHOD(void set_show_close_button(bool settings = true), gtk_header_bar_set_show_close_button)
-  _WRAP_METHOD(bool get_show_close_button(), gtk_header_bar_get_show_close_button)
+  _WRAP_METHOD(bool get_show_close_button() const, gtk_header_bar_get_show_close_button)
 
 
   _WRAP_PROPERTY("custom-title", Gtk::Widget*)