[compiler-rt] [llvm] [dfsan] Fix Endianess issue (PR #162881)

[Thurston Dang via llvm-commits]

thurstond wrote:

> Reduced test in origin_endianness.c is the only test case that
> fails on SystemZ

Does the test case need an XFAIL for SystemZ? Otherwise it will break SystemZ buildbots/anyone running tests on SystemZ.

https://github.com/llvm/llvm-project/pull/162881