[metacity] libmetacity: fix memory leak

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 77348e85b96b78ef330223309fdfbab94de9cf4c
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sat Mar 4 04:44:13 2017 +0200

    libmetacity: fix memory leak

 libmetacity/meta-css-provider.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/libmetacity/meta-css-provider.c b/libmetacity/meta-css-provider.c
index 544d934..8322558 100644
--- a/libmetacity/meta-css-provider.c
+++ b/libmetacity/meta-css-provider.c
@@ -230,6 +230,9 @@ meta_css_provider_finalize (GObject *object)
 
   provider = META_CSS_PROVIDER (object);
 
+  g_clear_pointer (&provider->name, g_free);
+  g_clear_pointer (&provider->variant, g_free);
+
   if (provider->resource)
     {
       g_resources_unregister (provider->resource);