RFR: 8333871: check sysinfo return values [v2]

[Matthias Baesken]

> 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

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/28317/files
  - new: https://git.openjdk.org/jdk/pull/28317/files/2d574f7c..e9d2b1b4

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=28317&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=28317&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/28317.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28317/head:pull/28317

PR: https://git.openjdk.org/jdk/pull/28317