RFR: 8317801: java/net/Socket/asyncClose/Race.java fails intermittently on AIX

[Shruthi]

Resolved a race condition in socket close handling that led to intermittent failures in Race.java on AIX
The bug report for the same: https://bugs.openjdk.org/browse/JDK-8317801

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Commit messages:
 - 8317801: java/net/Socket/asyncClose/Race.java fails intermittently on AIX

Changes: https://git.openjdk.org/jdk/pull/25817/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25817&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8317801
  Stats: 35 lines in 3 files changed: 32 ins; 2 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/25817.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25817/head:pull/25817

PR: https://git.openjdk.org/jdk/pull/25817