tax group can be null as argument

diff --git a/taxes/db/tax_groups_db.inc b/taxes/db/tax_groups_db.inc
index f39eccef51bbc1655a4d6532edebddff126330a1..fb40bf7de1dccd349c24fd98ddd727bd682d64ed 100644 (file)
--- a/taxes/db/tax_groups_db.inc
+++ b/taxes/db/tax_groups_db.inc
@@ -125,7 +125,7 @@ function get_tax_group_items_as_array($id)
        return $ret_tax_array;
 }
 
-function get_shipping_tax_as_array($id)
+function get_shipping_tax_as_array($id=null)
 {
        $ret_tax_array = array();