[pango] [opentype] Free mutex on hb_blob destruction

[Robert Ancell <rancell src gnome org>]

commit dc54dda64344fe8f7c18ce1223351fa2d8740832
Author: Robert Ancell <robert ancell canonical com>
Date:   Thu Jun 14 12:24:04 2012 +1200

    [opentype] Free mutex on hb_blob destruction

 pango/opentype/hb-blob.c    |    1 +
 pango/opentype/hb-private.h |    1 +
 2 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/pango/opentype/hb-blob.c b/pango/opentype/hb-blob.c
index 3e787fc..3e2f16c 100644
--- a/pango/opentype/hb-blob.c
+++ b/pango/opentype/hb-blob.c
@@ -174,6 +174,7 @@ hb_blob_destroy (hb_blob_t *blob)
   HB_OBJECT_DO_DESTROY (blob);
 
   _hb_blob_destroy_user_data (blob);
+  hb_mutex_free (blob->lock);
 
   free (blob);
 }
diff --git a/pango/opentype/hb-private.h b/pango/opentype/hb-private.h
index 2791b05..4523a1d 100644
--- a/pango/opentype/hb-private.h
+++ b/pango/opentype/hb-private.h
@@ -76,6 +76,7 @@ typedef GStaticMutex hb_mutex_t;
 #define hb_mutex_lock(M)		g_static_mutex_lock (&M)
 #define hb_mutex_trylock(M)		g_static_mutex_trylock (&M)
 #define hb_mutex_unlock(M)		g_static_mutex_unlock (&M)
+#define hb_mutex_free(M)		g_static_mutex_free (&M)
 
 #else
 #error "Could not find any system to define platform macros, see hb-private.h"