RFR: 8298006: Build failure by maybe-uninitialized error on Linux s390x GCC8

[Ichiroh Takiguchi]

On Mon, 5 Dec 2022 13:25:37 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

>> Thanks @magicus .
>> `--disable-warnings-as-errors` option worked fine as expected
>
> @takiguc Are you happy with that solution, so you can close the issue and this PR?

@magicus 
I don't think `--disable-warnings-as-errors` is the default, so I'd like to confirm if this kind of change to reduce errors/warnings is acceptable or not.

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PR: https://git.openjdk.org/jdk/pull/11475