fix uninitialized variable warning (#22477)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/22477
There is actually no use of uninitialized variable but some compilers are not smart enough to reason about two if branches are already taken together.
Reviewed By: hx89
Differential Revision: D16100211
fbshipit-source-id: 25f01d668063603d7aaa776451afe8a10415d2ea
