[mutter] meta-monitor-config: Initialize MetaConfiguration's properly

[Rui Matos <rtcm src gnome org>]

commit 76b6cc02d6c400191c902e19ca629f3abed72e80
Author: Rui Matos <tiagomatos gmail com>
Date:   Wed Nov 9 19:05:52 2016 +0100

    meta-monitor-config: Initialize MetaConfiguration's properly
    
    We weren't initializing the ref count which means we could either be
    leaking or end up using free'd memory.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=774135

 src/backends/meta-monitor-config.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/backends/meta-monitor-config.c b/src/backends/meta-monitor-config.c
index f691e54..21e3126 100644
--- a/src/backends/meta-monitor-config.c
+++ b/src/backends/meta-monitor-config.c
@@ -454,7 +454,7 @@ handle_end_element (GMarkupParseContext  *context,
       {
         if (strcmp (element_name, "configuration") == 0 && parser->unknown_count == 0)
           {
-            MetaConfiguration *config = g_slice_new (MetaConfiguration);
+            MetaConfiguration *config = config_new ();
 
             g_assert (parser->key_array->len == parser->output_array->len);