[jdk21u-dev] RFR: 8350582: Correct the parsing of the ssl value in javax.net.debug

[Goetz Lindenmaier]

I backport this for parity with 21.0.9-oracle.
resolved copyright, probably clean.

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

Commit messages:
 - Backport 1ec64811a365442c902e334b56f4cf926c316a4a

Changes: https://git.openjdk.org/jdk21u-dev/pull/1956/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1956&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8350582
  Stats: 25 lines in 6 files changed: 2 ins; 0 del; 23 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1956.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1956/head:pull/1956

PR: https://git.openjdk.org/jdk21u-dev/pull/1956