[libc-commits] [libc] [libc] Properly clear out errno in tests that check its value. (PR #131650)

[Joseph Huber via libc-commits]

https://github.com/jhuber6 commented:

Couldn't we just make the macros like `EXPECT_MATH_ERRNO` or `ASSERT_ERRNO` set it after finishing?

https://github.com/llvm/llvm-project/pull/131650