RFR: 8320798: Console read line with zero out should zero out underlying buffer [v2]

[Naoto Sato]

On Tue, 28 Nov 2023 19:30:34 GMT, Naoto Sato <naoto at openjdk.org> wrote:

>> It is best practice to zero out the underlying buffer after use.
>
> Naoto Sato has updated the pull request incrementally with one additional commit since the last revision:
> 
>   corrected fromIndex

Created an equivalent issue for addressing JLine: https://bugs.openjdk.org/browse/JDK-8321131

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PR Comment: https://git.openjdk.org/jdk/pull/16861#issuecomment-1834254962