[mutter] config: Fix an incorrect unref

[Jasper St. Pierre <jstpierre src gnome org>]

commit 2c1a6b6a121b84102907d4ec69b271e0050889ab
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Thu Oct 23 15:48:42 2014 -0700

    config: Fix an incorrect unref

 src/backends/meta-monitor-config.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/src/backends/meta-monitor-config.c b/src/backends/meta-monitor-config.c
index fe1f652..ac83cd9 100644
--- a/src/backends/meta-monitor-config.c
+++ b/src/backends/meta-monitor-config.c
@@ -871,7 +871,6 @@ apply_configuration (MetaMonitorConfig  *self,
     {
       g_ptr_array_unref (crtcs);
       g_ptr_array_unref (outputs);
-      config_unref (config);
       return FALSE;
     }