RFR: 8253635: Implement toString() for SSLEngineImpl

Mon Jan 11 05:03:03 UTC 2021

The SSLSocketImpl and SSLEngineImpl implementation does not override the toString() method.  The old code did.  BTW, I also made a few code clean up in the SSLSocketImpl.java.

Code clean up, trivial update, no new regression test.

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Commit messages:
 - missing a white space
 - 8253635: Implement toString() for SSLEngineImpl

Changes: https://git.openjdk.java.net/jdk/pull/2019/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2019&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8253635
  Stats: 42 lines in 2 files changed: 18 ins; 12 del; 12 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2019.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2019/head:pull/2019

PR: https://git.openjdk.java.net/jdk/pull/2019