[grilo-plugins] lua-factory: Fix crash if luaL_loadfile() fails

[Bastien Nocera <hadess src gnome org>]

commit 85a684b6d2bb9baeaff14220ed0b3a1a12a7ab32
Author: Bastien Nocera <hadess hadess net>
Date:   Fri Mar 6 19:38:52 2015 +0100

    lua-factory: Fix crash if luaL_loadfile() fails
    
    And there's a resource associated to the script. We'd be trying to
    unref the GResource with the wrong function.

 src/lua-factory/grl-lua-factory.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/lua-factory/grl-lua-factory.c b/src/lua-factory/grl-lua-factory.c
index cfa950e..a0629f4 100644
--- a/src/lua-factory/grl-lua-factory.c
+++ b/src/lua-factory/grl-lua-factory.c
@@ -328,7 +328,7 @@ bail:
     g_list_free (source->priv->slow_keys);
   }
 
-  g_clear_object (&resource);
+  g_clear_pointer (&resource, g_resource_unref);
   g_free (source_id);
   lua_close (L);
   return NULL;