[compiler-rt] Fix compile error on ohos (PR #118193)

[Thurston Dang via llvm-commits]

thurstond wrote:

Thanks for the patch! Sanitizers have a `#if SANITIZER_MUSL` macro. Could you please try whether that works instead? It would fix the musl problem more generally than `!defined(__OHOS__)`.

Adding @browneee (dfsan maintainer) since there are no reviewers added.

https://github.com/llvm/llvm-project/pull/118193