RFR: 8307156: native_thread not protected by TLH

[Markus Grönlund]

Greetings,

this is a small adjustment to correct and extend the scope of the TLH.

Testing: jdk_jfr

Thanks
Markus

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Commit messages:
 - 8307156

Changes: https://git.openjdk.org/jdk/pull/13780/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13780&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8307156
  Stats: 6 lines in 1 file changed: 2 ins; 1 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/13780.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13780/head:pull/13780

PR: https://git.openjdk.org/jdk/pull/13780