AckFrameSpliterator defines volatile fields. Since Spliterator is not supposed to be MT-safe volatile are not needed there. This change also include some other minor cleanup.
------------- Commit messages: - 8371916: Questionable volatile decrement in AckFrameSpliterator Changes: https://git.openjdk.org/jdk/pull/28325/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28325&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8371916 Stats: 13 lines in 1 file changed: 0 ins; 0 del; 13 mod Patch: https://git.openjdk.org/jdk/pull/28325.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/28325/head:pull/28325 PR: https://git.openjdk.org/jdk/pull/28325
