Initialize uninitialized variable (#42419)
Summary:
Fixes internal T70924595
Pull Request resolved: https://github.com/pytorch/pytorch/pull/42419
Reviewed By: allwu, Krovatkin
Differential Revision: D22889325
Pulled By: wconstab
fbshipit-source-id: 108b6a6c6bb7c98d77e22bae9974a6c00bc296f0
