[libc-commits] [libc] [libc] Avoid add_with_carry name shadowing issue (PR #215815)

[Lewis Crawford via libc-commits]

LewisCrawford wrote:

A quick ping for reviewers to take a look at this when you've got a chance.

This is a just a small 4-line fix for MSVC builds configured with `/Zc:twoPhase-` or `/permissive`, and should hopefully be fairly quick to review.

https://github.com/llvm/llvm-project/pull/215815