[compiler-rt] [compiler-rt] Address dlvsym not found compilation error when targeting certain platforms (PR #191444)

[Anshul Nigham via llvm-commits]

https://github.com/nigham approved this pull request.

Looks right (modulo formatting), based on

```
#if SANITIZER_GLIBC || SANITIZER_FREEBSD || SANITIZER_NETBSD
static void *GetFuncAddr(const char *name, const char *ver) {
  return LookupSymbolNextVersioned(name, ver);
}
```

https://github.com/llvm/llvm-project/pull/191444