Fix: missing class

htdocs/fourn/commande/liste.php

 <?PHP
 /* Copyright (C) 2001-2006 Rodolphe Quiedeville <rodolphe@quiedeville.org>
  * Copyright (C) 2004-2010 Laurent Destailleur  <eldy@users.sourceforge.net>
- * Copyright (C) 2005-2010 Regis Houssin        <regis@dolibarr.fr>
+ * Copyright (C) 2005-2011 Regis Houssin        <regis@dolibarr.fr>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -26,6 +26,7 @@
  */
 
 require("../../main.inc.php");
+require_once(DOL_DOCUMENT_ROOT."/fourn/class/fournisseur.class.php");
 require_once(DOL_DOCUMENT_ROOT."/fourn/class/fournisseur.commande.class.php");
 
 $langs->load("orders");