sale: wizard make_invoice raises unexpected exception.

[Eduardo Ruiz]

With a confirmed sale order, you try to run the wizard make_invoices (I have detected with a grouped invoice, selecting two confirmed orders in tree view, but no matter if you try without grouping or even with a single order) and an exception is raised from sale.py :

            #if not lines:
            # raise osv.except_osv(_('Warning'),_('Invoice cannot be created for this Sale Order due to one of the following reasons:\n1.The state is not in %s!\n2.The Sale Order Lines are Invoiced!')%(states,))

This check exists from revision 2685 (http://bazaar.launchpad.net/%7Eopenerp/openobject-addons/5.0/revision/2685).

version 5.0.9 ubuntu

[Eduardo Ruiz (readylan)]

The problem occurs when ORDER_POLICY is set to MANUAL.