RFR: 8288140: Avoid redundant Hashtable.get call in Signal.handle [v2]

[Andrey Turbanov]

On Fri, 10 Jun 2022 11:31:06 GMT, Andrey Turbanov <aturbanov at openjdk.org> wrote:

>> https://github.com/openjdk/jdk/blob/bc28baeba9360991e9b7575e1fbe178d873ccfc1/src/java.base/share/classes/jdk/internal/misc/Signal.java#L177-L178
>> 
>> Instead of separate Hashtable.get/remove calls we can just use value returned by `remove`,
>> It results in cleaner and a bit faster code.
>
> Andrey Turbanov has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8288140: Avoid redundant Hashtable.get call in Signal.handle
>   apply dmlloyd's suggestion

Thank you for review!

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PR: https://git.openjdk.org/jdk/pull/9100