[IMP] account: useless records browsing

A variable "lines" is instancied few lines above,
with the exact same browse call, and there is no
operation that could lead to an update of the result
between these two browse calls.

Closes #1394

addons/account/account_move_line.py

@@ -953,7 +953,7 @@ class account_move_line(osv.osv):
         if context is None:
             context = {}
         company_list = []
-        for line in self.browse(cr, uid, ids, context=context):
+        for line in lines:
             if company_list and not line.company_id.id in company_list:
                 raise osv.except_osv(_('Warning!'), _('To reconcile the entries company should be the same for all entries.'))
             company_list.append(line.company_id.id)