[gtk+] GtkStyleContext: Fix compiler warning.

[Carlos Garnacho <carlosg src gnome org>]

commit bdadcb568cc6e798c056492a437974a3a008a359
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sat Mar 27 21:30:30 2010 +0100

    GtkStyleContext: Fix compiler warning.

 gtk/gtkstylecontext.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkstylecontext.c b/gtk/gtkstylecontext.c
index 566538f..cb6bab6 100644
--- a/gtk/gtkstylecontext.c
+++ b/gtk/gtkstylecontext.c
@@ -81,7 +81,7 @@ gtk_style_context_init (GtkStyleContext *style_context)
 
   priv = GTK_STYLE_CONTEXT_GET_PRIVATE (style_context);
   priv->store = gtk_style_set_new ();
-  priv->theming_engine = gtk_theming_engine_load (NULL);
+  priv->theming_engine = (GtkThemingEngine *) gtk_theming_engine_load (NULL);
 }
 
 static GtkStyleProviderData *