[jdk21u] RFR: 8314063: The socket is not closed in Connection::createSocket when the handshake failed for LDAP connection

[Weibing Xiao]

The socket is not closed in Connection::createSocket when the handshake fails for LDAP connection. This is the backporting task for https://bugs.openjdk.org/browse/JDK-8314063

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

Commit messages:
 - Backport f2383b3cbd1096f0b38e89a3d876da2217511f11

Changes: https://git.openjdk.org/jdk21u/pull/112/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u&pr=112&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8314063
  Stats: 357 lines in 3 files changed: 290 ins; 42 del; 25 mod
  Patch: https://git.openjdk.org/jdk21u/pull/112.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u.git pull/112/head:pull/112

PR: https://git.openjdk.org/jdk21u/pull/112