Fix issues on Windows brought by #16289 (#16412)
Summary:
This one needs to be merged ASAP because the CUDA build for Windows is skipped at this time.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/16412
Differential Revision: D13833889
Pulled By: soumith
fbshipit-source-id: 95a401a01fb0f9c1045df0bfd72d8206b8a6f3fd
