8257708: Remove redundant unmodifiableSet wrapper from already immutable set returned by Collections.singleton
------------- Commit messages: - 8257708: Remove redundant unmodifiableSet wrapper from already immutable set returned by Collections.singleton - [PATCH] Remove redundant unmodifiableSet wrapper from already immutable set returned by Collections.singleton Changes: https://git.openjdk.java.net/jdk/pull/1505/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1505&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8257708 Stats: 26 lines in 2 files changed: 0 ins; 12 del; 14 mod Patch: https://git.openjdk.java.net/jdk/pull/1505.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/1505/head:pull/1505 PR: https://git.openjdk.java.net/jdk/pull/1505
