RFR: 8312414: Make java.util.ServiceLoader.LANG_ACCESS final

[Andrey Turbanov]

Found opportunity to make static `ServiceLoader.LANG_ACCESS` field `final`.

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Commit messages:
 - 8312414: Make java.util.ServiceLoader.LANG_ACCESS final
 - [PATCH] Make java.util.ServiceLoader.LANG_ACCESS final

Changes: https://git.openjdk.org/jdk/pull/14926/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14926&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8312414
  Stats: 5 lines in 1 file changed: 0 ins; 3 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/14926.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14926/head:pull/14926

PR: https://git.openjdk.org/jdk/pull/14926