[BE] Fix shadowed variable warning in `c10::TensorType::contiguousStridesOf` (#77387)
Summary: s/size/in_size/ in outer func
Test Plan: CI
Differential Revision: D36357483
Pull Request resolved: https://github.com/pytorch/pytorch/pull/77387
Approved by: https://github.com/seemethere, https://github.com/mehtanirav
