[gobject-introspection] repo: Drop deprecated GStaticMutex usage

[Colin Walters <walters src gnome org>]

commit a021f0b29cf3208fa6a09bf715f23f298bca9cb2
Author: Colin Walters <walters verbum org>
Date:   Mon Dec 17 09:50:28 2012 -0500

    repo: Drop deprecated GStaticMutex usage
    
    In favor of GOnce, since we just want initialize-once semantics.

 girepository/girepository.c |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/girepository/girepository.c b/girepository/girepository.c
index b5c3029..ccdd361 100644
--- a/girepository/girepository.c
+++ b/girepository/girepository.c
@@ -35,7 +35,6 @@
 
 #include "config.h"
 
-static GStaticMutex globals_lock = G_STATIC_MUTEX_INIT;
 static GIRepository *default_repository = NULL;
 static GSList *search_path = NULL;
 static GSList *override_search_path = NULL;
@@ -134,12 +133,13 @@ g_irepository_class_init (GIRepositoryClass *class)
 static void
 init_globals (void)
 {
-  g_static_mutex_lock (&globals_lock);
+  static gsize initialized = 0;
+
+  if (!g_once_init_enter (&initialized))
+    return;
 
   if (default_repository == NULL)
-    {
-      default_repository = g_object_new (G_TYPE_IREPOSITORY, NULL);
-    }
+    default_repository = g_object_new (G_TYPE_IREPOSITORY, NULL);
 
   if (search_path == NULL)
     {
@@ -184,7 +184,7 @@ init_globals (void)
       search_path = g_slist_reverse (search_path);
     }
 
-  g_static_mutex_unlock (&globals_lock);
+  g_once_init_leave (&initialized, 1);
 }
 
 void