[Reland] [1/N] fix clang-tidy warnings in torch/csrc (#108114)
Reland of PR #107648 with auto replaced with Py_ssize_t in eval_frame.c. This PR applies fixes to some found issues by clang-tidy in torch/csrc.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/108114
Approved by: https://github.com/Skylion007
