[crac] RFR: macOS build fixes [v2]

[Radim Vansa]

On Mon, 24 Jul 2023 13:28:02 GMT, Roman Marchenko <rmarchenko at openjdk.org> wrote:

>> This changeset fixes build warnings and errors occured on macOS.
>
> Roman Marchenko has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fixing review comments

Marked as reviewed by rvansa (Committer).

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PR Review: https://git.openjdk.org/crac/pull/92#pullrequestreview-1543487280