[vala] glib-2.0: make MainContext.ref_thread_default return value owned

[Evan Nemerson <evann src gnome org>]

commit 80b451fc1423d83a98d6d42e2e845d54818dc709
Author: Evan Nemerson <evan coeus-group com>
Date:   Sat Dec 1 12:25:57 2012 -0800

    glib-2.0: make MainContext.ref_thread_default return value owned

 vapi/glib-2.0.vapi |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/vapi/glib-2.0.vapi b/vapi/glib-2.0.vapi
index dc8aaf8..d0766bf 100644
--- a/vapi/glib-2.0.vapi
+++ b/vapi/glib-2.0.vapi
@@ -1521,7 +1521,7 @@ namespace GLib {
 		[CCode (cname = "g_main_current_source")]
 		public static unowned Source current_source ();
 		public static unowned MainContext? get_thread_default ();
-		public static unowned MainContext ref_thread_default ();
+		public static MainContext ref_thread_default ();
 		public void push_thread_default ();
 		public void pop_thread_default ();
 		[CCode (cname = "g_main_context_invoke_full")]