Shopify/active_merchant — pull request #579 by dougal (2013-02-12 11:01:33+00:00)
Title: Worldpay: Fixed a bug where supported card types had no card-code associated with ...

...them.

- Prevents NoMethodError to_sym for nil.
- Added JCB card code.
- Added Maestro card code.
- Added Laser card code.

Sorry, just noticed my commit message isn't prefixed with Worldpay.