[mutter] Fix an uninitialized variable warning

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

commit e04e9aac39ce0aa955ff471027d5adaff3e55687
Author: Jason Ekstrand <jason jlekstrand net>
Date:   Tue Apr 22 20:07:02 2014 -0500

    Fix an uninitialized variable warning

 src/core/meta-accel-parse.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/core/meta-accel-parse.c b/src/core/meta-accel-parse.c
index e9d3054..20218c6 100644
--- a/src/core/meta-accel-parse.c
+++ b/src/core/meta-accel-parse.c
@@ -196,6 +196,7 @@ accelerator_parse (const gchar         *accelerator,
     }
 
   keyval = 0;
+  keycode = 0;
   mods = 0;
   len = strlen (accelerator);
   while (len)