[libc-commits] [libc] [libc][math] Fix a -Wshadow warning in add_sub.h (PR #196337)

[Nico Weber via libc-commits]

nico wrote:

Given that `OutFPBits` and `InFPBits` are the same in this if, I wonder if a separate local variable is at all needed. Maybe we could just modify and return the outer y_bits. But it probably doesn't matter too much either way.

https://github.com/llvm/llvm-project/pull/196337