RFR: 8321470: ThreadLocal.nextHashCode can be static final [v2]

[Brett Okken]

> The static AtomicInteger used for the nextHashCode should be final.

Brett Okken has updated the pull request incrementally with one additional commit since the last revision:

  Update full name

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Changes:
  - all: https://git.openjdk.org/jdk/pull/16987/files
  - new: https://git.openjdk.org/jdk/pull/16987/files/9e276138..d05272a3

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=16987&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=16987&range=00-01

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/16987.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16987/head:pull/16987

PR: https://git.openjdk.org/jdk/pull/16987