fix(l10n.mx.facturae): se agrega un punto de guardado

se agrega un punto de guardado, en caso de que alguna de las facturas presente un error de
cancelación las anteriores se cancelen excepto el del error y los iguientes a ello

l10n_mx_facturae/models/account_invoice.py

@@ -361,17 +361,34 @@ class AccountInvoice(models.Model):
         """Verify cancellation status"""
         # TODO: Is this really needed? Maybe we can reuse the action_cancel
         for account_invoice in self:
-            status_cancelacion = account_invoice.consult_cfdi_cancellation_status()
-            if status_cancelacion is None:
-                continue
-            elif status_cancelacion is False:
-                self.undo_waiting_state()
-            else:
-                try:
-                    account_invoice.action_cancel()
-                except Exception as e:
-                    _logger.info(e)
-                    continue
+            try:
+                with self.env.cr.savepoint():
+                    status_cancelacion = \
+                        account_invoice.consult_cfdi_cancellation_status()
+                    if status_cancelacion is None:
+                        account_invoice.message_post(
+                            body=_(
+                                "No status update found on SAT"
+                            )
+                        )
+                    elif status_cancelacion is False:
+                        self.undo_waiting_state()
+                    else:
+                        try:
+                            account_invoice.action_cancel()
+                        except Exception as e:
+                            account_invoice.message_post(
+                                body=_(
+                                    "The invoice could not be canceled"
+                                )
+                            )
+            except Exception as e:
+                account_invoice.message_post(
+                    body=_(
+                        "Could not check SAT invoice status "
+                        "due to the following error: %s."
+                    ) % (e)
+                )
 
     @api.multi
     def _validate_cfdi_data(self):