[jdk11u-dev] RFR: 8314063: The socket is not closed in Connection::createSocket when the handshake failed for LDAP connection

[Andrew Lu]

I backport this for parity with 11.0.22-oracle.

test/jdk/com/sun/jndi/ldap/LdapSSLHandshakeFailureTest.java
“if (socket instanceof SSLSocket sslSocket ” change to "if (socket instanceof SSLSocket) {
SSLSocket sslSocket = (SSLSocket)socket;" as it is not support in jdk11

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

Commit messages:
 - Update LdapSSLHandshakeFailureTest.java
 - Backport f2383b3cbd1096f0b38e89a3d876da2217511f11

Changes: https://git.openjdk.org/jdk11u-dev/pull/2197/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2197&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8314063
  Stats: 356 lines in 3 files changed: 290 ins; 42 del; 24 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2197.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2197/head:pull/2197

PR: https://git.openjdk.org/jdk11u-dev/pull/2197