[jdk17u] RFR: 8273575: memory leak in appendBootClassPath(), paths must be deallocated

[Olga Mikhaltsova]

I'd like to backport JDK-8273575 to jdk17u.
The original patch applied cleanly.
The patch fixes a memory leak that should be fixed.

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Commit messages:
 - Backport 74ffe12267cb3ae63072a06f50083fd0352d8049

Changes: https://git.openjdk.java.net/jdk17u/pull/174/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u&pr=174&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8273575
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk17u/pull/174.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17u pull/174/head:pull/174

PR: https://git.openjdk.java.net/jdk17u/pull/174