[gtk+] stylecontext: Make sure we always clear the cache when the CSS changes

[Benjamin Otte <otte src gnome org>]

commit 1cb3734924cf09d38253878b6e3ec842afeaa4f3
Author: Benjamin Otte <otte redhat com>
Date:   Sat Dec 13 03:41:33 2014 +0100

    stylecontext: Make sure we always clear the cache when the CSS changes
    
    After b49c7c34214da2d8d5e6dae2e8d0b0fe1b23f68e we were no longer doing a
    full revalidate after GTK_CSS_CHANGE_SOURCE changes.
    
    This fixes spurious failures of widgets not properly updating when
    changing the theme.

 gtk/gtkstylecontext.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkstylecontext.c b/gtk/gtkstylecontext.c
index 6bd35c7..7773997 100644
--- a/gtk/gtkstylecontext.c
+++ b/gtk/gtkstylecontext.c
@@ -736,6 +736,8 @@ style_values_lookup (GtkStyleContext *context)
   else
     {
       build_properties (context, values, info->decl, NULL, &priv->relevant_changes);
+      /* These flags are always relevant */
+      priv->relevant_changes |= GTK_CSS_CHANGE_SOURCE;
     }
 
   g_object_unref (values);