[vala] After GLib 2.30 the GLib.AtomicInt.add returns int

[Maciej Marcin Piechotka <mpiechotka src gnome org>]

commit 49ec57aa31e4e41b4bf16b73379e1b6751b0504f
Author: Maciej Piechotka <uzytkownik2 gmail com>
Date:   Sun Dec 2 13:41:58 2012 +0000

    After GLib 2.30 the GLib.AtomicInt.add returns int

 vapi/glib-2.0.vapi |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/vapi/glib-2.0.vapi b/vapi/glib-2.0.vapi
index 163ffbb..1383405 100644
--- a/vapi/glib-2.0.vapi
+++ b/vapi/glib-2.0.vapi
@@ -1469,7 +1469,11 @@ namespace GLib {
        namespace AtomicInt {
                public static int get ([CCode (type = "volatile gint *")] ref int atomic);
                public static void set ([CCode (type = "volatile gint *")] ref int atomic, int newval);
+#if GLIB_2_30
+               public static int add ([CCode (type = "volatile gint *")] ref int atomic, int val);
+#else
                public static void add ([CCode (type = "volatile gint *")] ref int atomic, int val);
+#endif
                [Deprecated (since = "2.30", replacement = "add")]
                public static int exchange_and_add ([CCode (type = "volatile gint *")] ref int atomic, int 
val);
                public static bool compare_and_exchange ([CCode (type = "volatile gint *")] ref int atomic, 
int oldval, int newval);