Fix max_pool2d for returning wrong shape with return_indices=True on cuda (#38992)
Summary:
Fix https://github.com/pytorch/pytorch/issues/38986
The current code only resizes pooling output but forget to resize indices as well.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/38992
Differential Revision: D21718324
Pulled By: ngimel
fbshipit-source-id: 7cf937966d38ab2167be79979475c4e0cacbf82c
