[FIX] stock : Revert the unneccessary changes.

bzr revid: mdi@tinyerp.com-20120927090352-0kv4nw32v57h0gdy

addons/stock/stock.py

@@ -660,6 +660,7 @@ class stock_picking(osv.osv):
         'company_id': fields.many2one('res.company', 'Company', required=True, select=True, states={'done':[('readonly', True)], 'cancel':[('readonly',True)]}),
     }
     _defaults = {
+        'name': lambda self, cr, uid, context: '/',
         'state': 'draft',
         'move_type': 'direct',
         'type': 'internal',