RFR: 8252996: Thread safety problem in java.net.ProxySelector

[David M.Lloyd]

8252996: Thread safety problem in java.net.ProxySelector

-------------

Commit messages:
 - 8252996: Fix visibility issue in ProxySelector

Changes: https://git.openjdk.java.net/jdk/pull/184/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=184&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8252996
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/184.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/184/head:pull/184

PR: https://git.openjdk.java.net/jdk/pull/184