RFR: 8248149: G1: change _cleaning_claimed from int to bool

[Thomas Schatzl]

Hi all,

  please review this change to fix some claim variable from `int` to `bool` as it should be.

Testing: gha

Thanks,
  Thomas

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Commit messages:
 - Initial version

Changes: https://git.openjdk.org/jdk/pull/14487/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14487&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8248149
  Stats: 4 lines in 2 files changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/14487.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14487/head:pull/14487

PR: https://git.openjdk.org/jdk/pull/14487