Type Error - TransactionHandlerService:saveCommercePayment() does not extract currency correctly from the invoice object

@tcrawford

I've rerolled your changes against 2.x and removed the type check as we are now guaranteed to get an array on getInvoice. Could you have a look if this still fulfills your expectations?

@pvbergen. Thanks. With the changes made in 50ac3527 this issue should no longer occur as the webhook body is not used directly.

tcrawford → closed merge request !9