[jdk25u] RFR: 8361198: [AIX] fix misleading error output in thread_cpu_time_unchecked

[Matthias Baesken]

8361198: [AIX] fix misleading error output in thread_cpu_time_unchecked

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Commit messages:
 - Backport 2528c620a61195ac22d921b168444a7967bf1805

Changes: https://git.openjdk.org/jdk25u/pull/36/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u&pr=36&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8361198
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk25u/pull/36.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u.git pull/36/head:pull/36

PR: https://git.openjdk.org/jdk25u/pull/36