RFR: 8333871: check sysinfo return values [v2]

[Alan Bateman]

On Fri, 14 Nov 2025 11:07:20 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

>> In the review of [JDK-8333522](https://bugs.openjdk.org/browse/JDK-8333522) it has been discussed that we might run into issues because of failing sysinfo.
>> However we miss checking the return values at some places, this might need adjustment.
>
> Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:
> 
>   0 - terminate not needed

Thanks for checking that cpu_isalist == NULL is okay, the update to java_props_md.c looks okay to me.

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Marked as reviewed by alanb (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/28317#pullrequestreview-3470333746