RFR: 8303084: G1 Heap region liveness verification has inverted return value

[Thomas Schatzl]

On Wed, 22 Feb 2023 16:30:56 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

> Hi all,
> 
>   please review a fix for a mess-up in [JDK-8303084](https://bugs.openjdk.org/browse/JDK-8303084) where the return value of `G1VerifyLiveAndRemSetClosure::verify_liveness()` is inverted.
> 
> Thanks to @albertnetymk for noticing.
> 
> Testing: local compilation
> 
> Thanks,
>   Thomas

Thanks for the quick review

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PR: https://git.openjdk.org/jdk/pull/12721