RFR: 8267767: Redundant condition check in SafepointSynchronize::thread_not_running

[David Holmes]

On Mon, 29 Nov 2021 15:38:56 GMT, Harold Seigel <hseigel at openjdk.org> wrote:

>> As per the discussion in the JBS issue this adds a comment and some logging to the second condition check.
>> 
>> Testing: tiers 1-5 builds only (no tests as no functional changes)
>> 
>> Thanks,
>> David
>
> The changes look good.
> Thanks, Harold

Thanks @hseigel !

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PR: https://git.openjdk.java.net/jdk/pull/6552