[NFC] fix failed ompt tests on M1 device (#65696)

Fix the 2 failed ompt tests on M1 device found on #63194.

```
libomp :: ompt/synchronization/masked.c
libomp :: ompt/synchronization/master.c
```

For the details of this fix, please check the origin discussion in
https://github.com/llvm/llvm-project/issues/63194#issuecomment-1710494689

Thanks @jprotze for the fix.