[jdk15u-dev] RFR: 8274524: SSLSocket.close() hangs if it is called during the ssl handshake [v2]

[Alexey Bakhtin]

> Backport of JDK-8274524 to JDK15u-dev
> Backport is almost clean except trivial fix for Pattern Matching in the instanceof (not available in JDK15)
> sun/security/ssl/SSLSocketImpl tests passed

Alexey Bakhtin has updated the pull request incrementally with one additional commit since the last revision:

  Add braces

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Changes:
  - all: https://git.openjdk.java.net/jdk15u-dev/pull/176/files
  - new: https://git.openjdk.java.net/jdk15u-dev/pull/176/files/e5ff3960..77d58849

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk15u-dev&pr=176&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk15u-dev&pr=176&range=00-01

  Stats: 4 lines in 1 file changed: 2 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk15u-dev/pull/176.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk15u-dev pull/176/head:pull/176

PR: https://git.openjdk.java.net/jdk15u-dev/pull/176