fix OSS build targets
fix OSS build targets

Summary: ^

Reviewed By: mjoras

Differential Revision: D20088741

fbshipit-source-id: 46b0f844c7a12336d0c942ae8c4730295e5eb84d

facebookincubator/mvfst,facebookincubator/mvfst,facebookincubator/mvfst,facebookincubator/mvfst,facebookincubator/mvfst