RFR: 8308286 Fix clang warnings in linux code [v3]

[Artem Semenov]

On Thu, 1 Jun 2023 15:04:09 GMT, Weijun Wang <weijun at openjdk.org> wrote:

>> done
>
> I didn't ask to revert the change. It's `s/TARGET_OS_MAC/defined(__APPLE__)/`.

This is rarely used in the code and is not the essence of the current changes.
If you introduce such changes, then throughout the code.
Moreover, this can lead to problems, such as, for example, here: https://bugs.openjdk.org/browse/JDK-8309225

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PR Review Comment: https://git.openjdk.org/jdk/pull/14033#discussion_r1220056527