Initialize Xfconf when the backend is to be used

Previously, xfconf_init was called on g_io_module_load. But this will
fatally fail on systems with no xfconfd running.

See Bug #14789 for more details.

gsettings-backend/xfconf-giomodule.c

@@ -31,14 +31,6 @@
 
 G_MODULE_EXPORT XFCONF_EXPORT void g_io_module_load (GIOModule *module)
 {
-  GError *error = NULL;
-
-  if (!xfconf_init (&error)) {
-    g_critical ("Failed to get connection to xfconfd: %s", error->message);
-    g_error_free (error);
-    return;
-  }
-
   g_type_module_use(G_TYPE_MODULE(module));
 
   g_io_extension_point_implement(G_SETTINGS_BACKEND_EXTENSION_POINT_NAME,
@@ -49,7 +41,6 @@ G_MODULE_EXPORT XFCONF_EXPORT void g_io_module_load (GIOModule *module)
 
 G_MODULE_EXPORT XFCONF_EXPORT void g_io_module_unload (GIOModule *module)
 {
-  xfconf_shutdown();
 }
 
 /* Module query */

gsettings-backend/xfconf-gsettings-backend.c

@@ -297,6 +297,8 @@ xfconf_gsettings_backend_finalize (XfconfGsettingsBackend *self)
 
   g_hash_table_destroy (self->subscribed_prop);
 
+  xfconf_shutdown();
+
   G_OBJECT_CLASS(xfconf_gsettings_backend_parent_class)->finalize((GObject*)self);
 }
 
@@ -304,6 +306,13 @@ static void
 xfconf_gsettings_backend_init (XfconfGsettingsBackend *self)
 {
   const gchar *prg_name;
+  GError *error = NULL;
+
+  if (!xfconf_init (&error)) {
+    g_critical ("Failed to get connection to xfconfd: %s", error->message);
+    g_error_free (error);
+    return;
+  }
 
   self->nhandled_tree_node = 0;