A trivial fix to reduce ThreadListHandle overhead in relation to handshakes.
This refactoring was tested with Mach5 Tier[1-3]. ------------- Commit messages: - 8249004: Reduce ThreadListHandle overhead in relation to direct handshakes Changes: https://git.openjdk.java.net/jdk/pull/4677/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4677&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8249004 Stats: 10 lines in 3 files changed: 7 ins; 1 del; 2 mod Patch: https://git.openjdk.java.net/jdk/pull/4677.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/4677/head:pull/4677 PR: https://git.openjdk.java.net/jdk/pull/4677
