RFR: 8267357: build breaks with -Werror option on micro benchmark added for JDK-8256973

[Tobias Hartmann]

On Wed, 19 May 2021 08:20:13 GMT, Jatin Bhateja <jbhateja at openjdk.org> wrote:

> Relevant declarations modified and tested with -Werror, no longer see unchecked conversion warnings.
> 
> Kindly review and approve.

Marked as reviewed by thartmann (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/4108