[jdk13u-dev] RFR: 8254967: com.sun.net.HttpsServer spins on TLS session close

[Alexey Bakhtin]

Clean backport of JDK-8254967.

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Commit messages:
 - Backport 953e472dedf55bc1a831af36637547b5a1fd7af7

Changes: https://git.openjdk.java.net/jdk13u-dev/pull/246/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk13u-dev&pr=246&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8254967
  Stats: 6 lines in 1 file changed: 5 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk13u-dev/pull/246.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk13u-dev pull/246/head:pull/246

PR: https://git.openjdk.java.net/jdk13u-dev/pull/246