[libcxx-commits] [libcxxabi] [libc++abi][test] Remove `XFAIL` in `cxa_thread_atexit_test.pass.cpp` (PR #232638)

[A. Jiang via libcxx-commits]

frederick-vs-ja wrote:

It's not the first time that tests of libc++ and/or libc++abi unexpectedly pass due to `// XFAIL: LLVM-LIBC-FIXME` comments after a fix of LLVM libc++.

@boomanaiden154 @ldionne @michaelrj-google Would it be possible to make a change to libc also trigger CI for libc++ using the LLVM libc build, but not other builds?

https://github.com/llvm/llvm-project/pull/232638