[jdk19u] RFR: 8292240: CarrierThread.blocking not reset when spare not activated

[Rob McKenna]

Reviewed-by: dfuchs

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Commit messages:
 - 8292240: CarrierThread.blocking not reset when spare not activated

Changes: https://git.openjdk.org/jdk19u/pull/22/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk19u&pr=22&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8292240
  Stats: 154 lines in 2 files changed: 148 ins; 0 del; 6 mod
  Patch: https://git.openjdk.org/jdk19u/pull/22.diff
  Fetch: git fetch https://git.openjdk.org/jdk19u pull/22/head:pull/22

PR: https://git.openjdk.org/jdk19u/pull/22