[mutter] theme: Shut up some GTK+ warnings

[Florian Müllner <fmuellner src gnome org>]

commit 9b9083180f211cc4f19750de84c92dd8541c8848
Author: Florian Müllner <fmuellner gnome org>
Date:   Fri Nov 20 16:59:56 2015 +0100

    theme: Shut up some GTK+ warnings
    
    GTK+ started to complain when the state parameter passed to any
    gtk_style_context_get*() method mismatches the context's current
    state a while ago.

 src/ui/theme.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/src/ui/theme.c b/src/ui/theme.c
index 555b902..1f33c3e 100644
--- a/src/ui/theme.c
+++ b/src/ui/theme.c
@@ -1130,9 +1130,10 @@ meta_style_info_create_font_desc (MetaStyleInfo *style_info)
 {
   PangoFontDescription *font_desc;
   const PangoFontDescription *override = meta_prefs_get_titlebar_font ();
+  GtkStyleContext *context = style_info->styles[META_STYLE_ELEMENT_TITLE];
 
-  gtk_style_context_get (style_info->styles[META_STYLE_ELEMENT_TITLE],
-                         GTK_STATE_FLAG_NORMAL,
+  gtk_style_context_get (context,
+                         gtk_style_context_get_state (context),
                          "font", &font_desc, NULL);
 
   if (override)