[libc-commits] [libc] [libc][test] split exit tests into two separate tests (PR #169820)

[Shreeyash Pandey via libc-commits]

bojle wrote:

@SchrodingerZhu this would be the patch that you reverted [here](https://github.com/llvm/llvm-project/pull/166355). I'll merge it after syscall num patch, I have commit access now. Could you take a look again?

https://github.com/llvm/llvm-project/pull/169820