Notice: Undefined variable: changes

If we turn off all the fields on the checkout page
/admin/store/settings/countries/fields
Then after editing any order
For example page:
/admin/store/orders/ORDER_ID/edit
There are errors:
Notice: Undefined variable: changes в функции uc_order_pane_ship_to() (строка 77 в файле /var/www/jeto/data/www/jeto.ru/sites/all/modules/ubercart/uc_order/uc_order.order_pane.inc).
Notice: Undefined variable: changes в функции uc_order_pane_bill_to() (строка 121 в файле /var/www/jeto/data/www/jeto.ru/sites/all/modules/ubercart/uc_order/uc_order.order_pane.inc).

Bug in the code:

  case 'edit-process':
    foreach ($form_state['values'] as $key => $value) {
      if (substr($key, 0, 9) == 'delivery_') {
        if (uc_address_field_enabled(substr($key, 9))) {
          $changes[$key] = $value;
        }
      }
    }
    return $changes;

Not one field is not included, hence the data is not assembled into a variable, hence there is no variable.
Patch I enclose.