[jdk20] RFR: 8298084: Memory leak in Method::build_profiling_method_data [v6]

[Coleen Phillimore]

> This change fixes the MethodData leak by calling the destructor in both the release_C_heap_structures conditionally and by calling the MethodData destructor in the MetadataFactory::free_metadata method.
> Thanks to @jcking for working on the patch and discussion.
> Tested with tier1-4.

Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:

  Even more comment updates.  Removed word salad.

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Changes:
  - all: https://git.openjdk.org/jdk20/pull/13/files
  - new: https://git.openjdk.org/jdk20/pull/13/files/9cccf6c7..95ecbc3c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk20&pr=13&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk20&pr=13&range=04-05

  Stats: 3 lines in 1 file changed: 0 ins; 2 del; 1 mod
  Patch: https://git.openjdk.org/jdk20/pull/13.diff
  Fetch: git fetch https://git.openjdk.org/jdk20 pull/13/head:pull/13

PR: https://git.openjdk.org/jdk20/pull/13