[clang] [clang] Use tighter lifetime bounds for C temporary arguments (PR #170518)

[Nick Desaulniers via cfe-commits]

nickdesaulniers wrote:

@nathanchance heads up; can you please test this when you get a chance against the Linux kernel? Looks like it's a stacked PR, where the base has had a revert.

Thanks for pursuing this Paul!

https://github.com/llvm/llvm-project/pull/170518