crash when product does not have a company

[Ronald Portier (Therp)]

stock_delivery_times_advanced uses the company in the product to get the lead time.

This causes problems when entering a sale_order_line for a product that is not tied to a company. See crash report below.

expected result: when product does not refer to a company, lead time should be taken from the currently active company in the user session, or from the company in the user_preferences.

OpenERP Server Error

Client Traceback (most recent call last):
  File "/home/openeyedev/var/projects/oe_intervlag_70/web/addons/web/http.py", line 204, in dispatch
    response["result"] = method(self, **self.params)
  File "/home/openeyedev/var/projects/oe_intervlag_70/web/addons/web/controllers/main.py", line 1128, in call_kw
    return self._call_kw(req, model, method, args, kwargs)
  File "/home/openeyedev/var/projects/oe_intervlag_70/web/addons/web/controllers/main.py", line 1120, in _call_kw
    return getattr(req.session.model(model), method)(*args, **kwargs)
  File "/home/openeyedev/var/projects/oe_intervlag_70/web/addons/web/session.py", line 42, in proxy
    result = self.proxy.execute_kw(self.session._db, self.session._uid, self.session._password, self.model, method, args, kw)
  File "/home/openeyedev/var/projects/oe_intervlag_70/web/addons/web/session.py", line 30, in proxy_method
    result = self.session.send(self.service_name, method, *args)
  File "/home/openeyedev/var/projects/oe_intervlag_70/web/addons/web/session.py", line 103, in send
    raise xmlrpclib.Fault(openerp.tools.ustr(e), formatted_info)

Server Traceback (most recent call last):
  File "/home/openeyedev/var/projects/oe_intervlag_70/web/addons/web/session.py", line 89, in send
    return openerp.netsvc.dispatch_rpc(service_name, method, args)
  File "/home/openeyedev/var/oe_repo/checkouts/ocb-server-7.0/ocb-server-7.0/openerp/netsvc.py", line 292, in dispatch_rpc
    result = ExportService.getService(service_name).dispatch(method, params)
  File "/home/openeyedev/var/oe_repo/checkouts/ocb-server-7.0/ocb-server-7.0/openerp/service/web_services.py", line 626, in dispatch
    res = fn(db, uid, *params)
  File "/home/openeyedev/var/oe_repo/checkouts/ocb-server-7.0/ocb-server-7.0/openerp/osv/osv.py", line 190, in execute_kw
    return self.execute(db, uid, obj, method, *args, **kw or {})
  File "/home/openeyedev/var/oe_repo/checkouts/ocb-server-7.0/ocb-server-7.0/openerp/osv/osv.py", line 132, in wrapper
    return f(self, dbname, *args, **kwargs)
  File "/home/openeyedev/var/oe_repo/checkouts/ocb-server-7.0/ocb-server-7.0/openerp/osv/osv.py", line 199, in execute
    res = self.execute_cr(cr, uid, obj, method, *args, **kw)
  File "/home/openeyedev/var/oe_repo/checkouts/ocb-server-7.0/ocb-server-7.0/openerp/osv/osv.py", line 187, in execute_cr
    return getattr(object, method)(cr, uid, *args, **kw)
  File "/home/openeyedev/var/projects/oe_intervlag_70/3rd_party_modules/stock_delivery_times_advanced/sale.py", line 55, in product_id_change
    cr, uid, info_product, qty=total_qty, context=context)
  File "/home/openeyedev/var/projects/oe_intervlag_70/3rd_party_modules/stock_delivery_times_advanced/product.py", line 61, in _get_delays
    delay += product.company_id.po_lead
TypeError: unsupported operand type(s) for +=: 'float' and 'NoneType'