Fixed bug in heroku upstream merge [#116436733]
Fixed bug in heroku upstream merge [#116436733]

Signed-off-by: David Jahn <ea2208fe99a56ed20c9ae20b0a1446b61f13a269@gmail.com>

cloudfoundry/go-buildpack,cloudfoundry/go-buildpack,cloudfoundry/go-buildpack