RFR: 8321163: [test] OutputAnalyzer.getExitValue() unnecessarily logs even when process has already completed [v3]

[Jaikiran Pai]

On Fri, 1 Dec 2023 12:09:14 GMT, Stefan Karlsson <stefank at openjdk.org> wrote:

>> Hello Stefan, this is just for a tiny optimization to prevent multiple reads (in the same thread) on the `volatile` field `processExitCode` in this method.
>
> I don't think such an optimization is needed here. This is not performance-critical code.

That's true. I've now updated the PR to keep it simple and remove that optimization.

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PR Review Comment: https://git.openjdk.org/jdk/pull/16919#discussion_r1412058767