[glib] GSettingsBackend: allow floating refs from read()

[Ryan Lortie <ryanl src gnome org>]

commit 6e7da987b443c861946a7702d64f9e50150b9320
Author: Ryan Lortie <desrt desrt ca>
Date:   Thu Dec 22 00:24:20 2011 -0500

    GSettingsBackend: allow floating refs from read()
    
    Use g_variant_take_ref() to allow for backends to return floating
    GVariant instances from their read() implementations.

 gio/gsettingsbackend.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/gio/gsettingsbackend.c b/gio/gsettingsbackend.c
index 6ea88d2..6075d7f 100644
--- a/gio/gsettingsbackend.c
+++ b/gio/gsettingsbackend.c
@@ -733,6 +733,9 @@ g_settings_backend_read (GSettingsBackend   *backend,
   value = G_SETTINGS_BACKEND_GET_CLASS (backend)
     ->read (backend, key, expected_type, default_value);
 
+  if (value != NULL)
+    value = g_variant_take_ref (value);
+
   if G_UNLIKELY (value && !g_variant_is_of_type (value, expected_type))
     {
       g_variant_unref (value);