[jdk17] RFR: 8271222: two runtime/Monitor tests don't check exit code

[Igor Ignatyev]

Hi all,

could you please review this small and trivial patch?

testing: `runtime/Monitor` tests on `{linux,windows,macos}-x64`

Thanks,
-- Igor

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Commit messages:
 - copyright year
 - 8271222

Changes: https://git.openjdk.java.net/jdk17/pull/280/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17&pr=280&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8271222
  Stats: 3 lines in 2 files changed: 2 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk17/pull/280.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17 pull/280/head:pull/280

PR: https://git.openjdk.java.net/jdk17/pull/280