[grilo-plugins] lua-factory: Fix memory leak of list

[Tim Lunn <timl src gnome org>]

commit 26217f97e9ca2bba4a8b2210d4e747b54ae378e3
Author: Tim Lunn <tim feathertop org>
Date:   Fri Jan 15 10:51:01 2016 +1100

    lua-factory: Fix memory leak of list
    
    https://bugzilla.gnome.org/show_bug.cgi?id=760565

 src/lua-factory/grl-lua-factory.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/lua-factory/grl-lua-factory.c b/src/lua-factory/grl-lua-factory.c
index 5b531da..1f93d75 100644
--- a/src/lua-factory/grl-lua-factory.c
+++ b/src/lua-factory/grl-lua-factory.c
@@ -1193,6 +1193,7 @@ merge_all_configs (const gchar *source_id,
     for (it_keys = list_keys; it_keys; it_keys = g_list_next (it_keys)) {
       options = g_list_append (options, g_strdup (it_keys->data));
     }
+    g_list_free(list_keys);
   }
 
   /* Now merge them */