[jdk8u-dev] RFR: 8322511: [11u] JfrCheckpointThreadClosure::do_thread crashes when fetching thread_id

[Jiawei Tang]

Hi all,

This pull request contains a backport of commit [29f300eb](https://github.com/openjdk/jdk11u-dev/commit/29f300eb2ac4c038fad7f8e09eab8a53b69526c6) from the [openjdk/jdk11u-dev](https://git.openjdk.org/jdk11u-dev) repository.

The commit being backported was authored by Jiawei Tang on 11 Mar 2024 and was reviewed by Paul Hohensee.

Thanks!

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

Commit messages:
 - Backport 29f300eb2ac4c038fad7f8e09eab8a53b69526c6

Changes: https://git.openjdk.org/jdk8u-dev/pull/486/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=486&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8322511
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/486.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/486/head:pull/486

PR: https://git.openjdk.org/jdk8u-dev/pull/486