RFR: 8350178: Incorrect comment after JDK-8345580 [v2]

[SendaoYan]

On Mon, 17 Feb 2025 10:52:00 GMT, SendaoYan <syan at openjdk.org> wrote:

>> Hi all,
>> In [JDK-8345580](https://bugs.openjdk.org/browse/JDK-8345580), the const modifier for variable Node::_idx has been removed, but the constant description for variable Node::_idx leave unchange. The related description should be updated.
>> 
>> Only touch the comments, no risk.
>
> SendaoYan has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Remove extra a whitespace

Thanks all for the reviews.

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PR Comment: https://git.openjdk.org/jdk/pull/23659#issuecomment-2665132373