RFR: 8309692: Fix -Wconversion warnings in javaClasses

[Coleen Phillimore]

On Fri, 9 Jun 2023 16:00:51 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

> Please review this trivial patch to remove implicit integer conversions in javaClasses.inline.hpp/cpp files.
> Tested tier1-4.

Thanks Fred and Matias!

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PR Comment: https://git.openjdk.org/jdk/pull/14397#issuecomment-1585066347