RFR: 8309673: Refactor ref_at methods in SA ConstantPool [v2]

[Matias Saavedra Silva]

On Fri, 9 Jun 2023 14:56:21 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> Matias Saavedra Silva has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Removed unnecessary assignment
>
> Looks good.

Thank you for the reviews @coleenp, @fparain, and @iklam !

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PR Comment: https://git.openjdk.org/jdk/pull/14385#issuecomment-1585021327