Fix: another not complete change for adding ref for supplier invoices.

htdocs/fourn/facture/index.php

 <?php
 /* Copyright (C) 2002-2006 Rodolphe Quiedeville <rodolphe@quiedeville.org>
- * Copyright (C) 2004-2011 Laurent Destailleur  <eldy@users.sourceforge.net>
+ * Copyright (C) 2004-2013 Laurent Destailleur  <eldy@users.sourceforge.net>
  * Copyright (C) 2005-2012 Regis Houssin        <regis.houssin@capnetworks.com>
  * Copyright (C) 2013	   Philippe Grand		<philippe.grand@atoo-net.com>
  *
@@ -192,7 +192,7 @@ if ($resql)
 	print '<form method="GET" action="'.$_SERVER["PHP_SELF"].'">';
 	print '<table class="liste" width="100%">';
 	print '<tr class="liste_titre">';
-	print_liste_field_titre($langs->trans("Ref"),$_SERVER["PHP_SELF"],"fac.rowid","",$param,"",$sortfield,$sortorder);
+	print_liste_field_titre($langs->trans("Ref"),$_SERVER["PHP_SELF"],"fac.ref,fac.rowid","",$param,"",$sortfield,$sortorder);
 	print_liste_field_titre($langs->trans("RefSupplier"),$_SERVER["PHP_SELF"],"ref_supplier","",$param,"",$sortfield,$sortorder);
 	print_liste_field_titre($langs->trans("Date"),$_SERVER["PHP_SELF"],"fac.datef,fac.rowid","",$param,'align="center"',$sortfield,$sortorder);
 	print_liste_field_titre($langs->trans("DateDue"),$_SERVER["PHP_SELF"],"fac.date_lim_reglement","",$param,'align="center"',$sortfield,$sortorder);