[vala] gobject-2.0: add Closure.SIZE for sizeof(GClosure)

[Evan Nemerson <evann src gnome org>]

commit 6a5ea3b5192f53f3e1249318443ba723649a14cf
Author: Evan Nemerson <evan coeus-group com>
Date:   Sat Jul 21 12:16:09 2012 -0700

    gobject-2.0: add Closure.SIZE for sizeof(GClosure)

 vapi/gobject-2.0.vapi |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/vapi/gobject-2.0.vapi b/vapi/gobject-2.0.vapi
index d00668b..0979a3d 100644
--- a/vapi/gobject-2.0.vapi
+++ b/vapi/gobject-2.0.vapi
@@ -556,6 +556,8 @@ namespace GLib {
 		public void set_marshal (ClosureMarshal marshal);
 		public void add_marshal_guards (void *pre_marshal_data, ClosureNotify pre_marshal_notify, void *post_marshal_data, ClosureNotify post_marshal_notify);
 		public void set_meta_marshal (void *marshal_data, ClosureMarshal meta_marshal);
+		[CCode (cname = "sizeof(GClosure)")]
+		public static size_t SIZE;
 	}
 
 	[CCode (has_target = false)]