Always filter out invoice without move in _update_tax_cash_basis

process and cancel can call the method on invoice without move for example if
the invoice is empty.

issue8348
review263531002

account.py

@@ -275,7 +275,6 @@ class Invoice(metaclass=PoolMeta):
             if 'payment_lines' in values:
                 invoices.extend(records)
         invoices = cls.browse(sum(args[0:None:2], []))
-        invoices = [i for i in invoices if i.move]
         cls._update_tax_cash_basis(invoices)
 
     @classmethod
@@ -303,6 +302,8 @@ class Invoice(metaclass=PoolMeta):
         date = Transaction().context.get('payment_date', Date.today())
         periods = {}
         for invoice in invoices:
+            if not invoice.move:
+                continue
             if invoice.company not in periods:
                 periods[invoice.company] = Period.find(
                     invoice.company.id, date=date)