RFR: 8284910: Buffer clean in PasswordCallback [v9]

[Xue-Lei Andrew Fan]

On Thu, 28 Apr 2022 06:31:30 GMT, Jaikiran Pai <jpai at openjdk.org> wrote:

> More of a FYI - the CheckCleanerBound test failed on one of the test setups. So I've created https://bugs.openjdk.java.net/browse/JDK-8285785 to track that failure.

Thank you!  I will add the sleep back.

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PR: https://git.openjdk.java.net/jdk/pull/8272