RFR: 8339475: Check return value of pthread_create in jdk coding [v3]

[Christoph Langer]

On Thu, 26 Sep 2024 14:44:53 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

>> It has been discussed that checking the return value of pthread_create should be done.
>> See the discussion here https://github.com/openjdk/jdk/pull/20812 about the splashscreen coding .
>
> Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:
> 
>   some macOS cleanup

LGTM.

The bug title could be changed into something like "Clean up return code handling for pthread calls in library coding"

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Marked as reviewed by clanger (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/21182#pullrequestreview-2331751511