[jdk21u-dev] RFR: 8333149: ubsan : memset on nullptr target detected in jvmtiEnvBase.cpp get_object_monitor_usage

[Matthias Baesken]

Backport of 8333149, diff in stride

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Commit messages:
 - Backport 43a2f17342af8f5bf1f5823df9fa0bf0bdfdfce2

Changes: https://git.openjdk.org/jdk21u-dev/pull/928/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=928&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8333149
  Stats: 6 lines in 1 file changed: 4 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/928.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/928/head:pull/928

PR: https://git.openjdk.org/jdk21u-dev/pull/928