[jdk11u-dev] RFR: 8280414: Memory leak in DefaultProxySelector

[Matthias Baesken]

8280414: Memory leak in DefaultProxySelector

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Commit messages:
 - Backport fe77250fa450ec803d2818dc90c5bf156521d537

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/821/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=821&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8280414
  Stats: 11 lines in 1 file changed: 1 ins; 3 del; 7 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/821.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/821/head:pull/821

PR: https://git.openjdk.java.net/jdk11u-dev/pull/821