BUGFIX/UPGRADE: Upgrading to 3.0: Ensuring correct use of map()

git-svn-id: https://silverstripe-ecommerce.googlecode.com/svn/modules/ecommerce_delivery/trunk@4586 950b781c-c544-efab-2f99-90083ee69683
BUGFIX

git-svn-id: https://silverstripe-ecommerce.googlecode.com/svn/modules/ecommerce_delivery/trunk@4594 950b781c-c544-efab-2f99-90083ee69683