[gnome-shell] st-scroll-bar: Fix build warnings

[Florian MÃllner <fmuellner src gnome org>]

commit 247566ca1db87d07f78be2b796cd4d2e209bb6b9
Author: Florian MÃllner <fmuellner gnome org>
Date:   Wed Aug 1 17:36:16 2012 +0200

    st-scroll-bar: Fix build warnings
    
    Introduced by commit aa120e09020

 src/st/st-scroll-bar.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/st/st-scroll-bar.c b/src/st/st-scroll-bar.c
index 172d4a8..b7d1bb5 100644
--- a/src/st/st-scroll-bar.c
+++ b/src/st/st-scroll-bar.c
@@ -591,7 +591,7 @@ stop_scrolling (StScrollBar *bar)
   if (!bar->priv->capture_handler)
     return;
 
-  st_widget_remove_style_pseudo_class (bar->priv->handle, "active");
+  st_widget_remove_style_pseudo_class (ST_WIDGET (bar->priv->handle), "active");
 
   stage = CLUTTER_STAGE (clutter_actor_get_stage (bar->priv->trough));
   g_signal_handler_disconnect (stage, bar->priv->capture_handler);
@@ -653,7 +653,7 @@ handle_button_press_event_cb (ClutterActor       *actor,
                                             &priv->y_origin))
     return FALSE;
 
-  st_widget_add_style_pseudo_class (priv->handle, "active");
+  st_widget_add_style_pseudo_class (ST_WIDGET (priv->handle), "active");
 
   /* Account for the scrollbar-trough-handle nesting. */
   priv->x_origin += clutter_actor_get_x (priv->trough);