[lilliput-jdk17u:lilliput] RFR: 8316401: sun/tools/jhsdb/JStackStressTest.java failed with "InternalError: We should have found a thread that owns the anonymous lock"

[Roman Kennke]

I would like to backport this LW-locking-related bugfix to lilliput-17. Backport has been clean.

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Commit messages:
 - 8316401: sun/tools/jhsdb/JStackStressTest.java failed with "InternalError: We should have found a thread that owns the anonymous lock"

Changes: https://git.openjdk.org/lilliput-jdk17u/pull/71/files
  Webrev: https://webrevs.openjdk.org/?repo=lilliput-jdk17u&pr=71&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8316401
  Stats: 5 lines in 1 file changed: 4 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/lilliput-jdk17u/pull/71.diff
  Fetch: git fetch https://git.openjdk.org/lilliput-jdk17u.git pull/71/head:pull/71

PR: https://git.openjdk.org/lilliput-jdk17u/pull/71