[gtk+] cssnode: fix a compiler warning

[Cosimo Cecchi <cosimoc src gnome org>]

commit dcaffe369f10b2ec45a57ba61fd49b64f9eb4743
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Sun Jan 3 11:25:45 2016 -0800

    cssnode: fix a compiler warning

 gtk/gtkcssnode.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkcssnode.c b/gtk/gtkcssnode.c
index 4bae4e5..916b83b 100644
--- a/gtk/gtkcssnode.c
+++ b/gtk/gtkcssnode.c
@@ -1604,7 +1604,7 @@ gtk_css_node_has_initial_value (GtkCssNode          *cssnode,
   GtkCssNode *parent_node;
   GtkCssStyle *style, *parent_style;
   GtkCssValue *value, *initial, *computed;
-  GtkCssProvider *provider;
+  GtkStyleProviderPrivate *provider;
   gboolean is_initial;
   guint id;