Commerce coupon reference field schema broken?

In commerce_coupon.install the schema for commerce_coupon_reference field_schema appears declared incorrectly.

It meant the commerce_coupon_reference_coupon_id field wasn't added to the field tables, resulting in odd entity api fatal errors.

The function is declared as commerce_coupon_reference_field_schema when it probably should be commerce_coupon_field_schema

Patch attached.

cheers,

DT