Reduce PyTorch warnings: Cast fix xplat/caffe2/c10/core/TensorOptions.h (#65030)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/65030
Test Plan:
```
buck build --show-output //caffe2/torch/fb/sparsenn:sparsenn_operators
buck test caffe2/torch/fb/sparsenn:test
```
Reviewed By: r-barnes
Differential Revision: D30948721
fbshipit-source-id: 16fe42daab35709c56a4d3ccc276ea635a3510c1
