RFR: 8264514: HexFormat implementation tweaks

[Raffaello Giulietti]

On Wed, 7 Apr 2021 18:49:36 GMT, Raffaello Giulietti <github.com+70726043+rgiulietti at openjdk.org> wrote:

> (Changed to new branch in personal fork)
> 
> Please review these small tweaks.
> For background information see [1](https://mail.openjdk.java.net/pipermail/core-libs-dev/2021-March/075822.html)
> 
> Greetings
> Raffaello

Automatically started Windows x64 tier1 tests are still running after more than 24 hours...

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PR: https://git.openjdk.java.net/jdk/pull/3381