[devhelp] window: fix compilation warning

[Aleksander Morgado <aleksm src gnome org>]

commit c3362e61334436532c197c50cde42ca3b91e41f2
Author: Aleksander Morgado <aleksander lanedo com>
Date:   Tue Feb 5 20:07:13 2013 +0100

    window: fix compilation warning

 src/dh-window.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/dh-window.c b/src/dh-window.c
index 4295771..8ab869a 100644
--- a/src/dh-window.c
+++ b/src/dh-window.c
@@ -746,7 +746,7 @@ window_populate (DhWindow *window)
         gtk_widget_show_all (priv->hpaned);
 
         /* Focus search in sidebar by default */
-        dh_sidebar_set_search_focus (priv->sidebar);
+        dh_sidebar_set_search_focus (DH_SIDEBAR (priv->sidebar));
 
         window_update_zoom_actions_state (window);
         window_open_new_tab (window, NULL, TRUE);