RFR: 8295500: AccordionSkin: memory leak when changing skin [v3]

[Andy Goryachev]

On Fri, 2 Dec 2022 09:42:33 GMT, Ajit Ghaisas <aghaisas at openjdk.org> wrote:

>> Andy Goryachev has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 29 commits:
>> 
>>  - 8295500: cleanup
>>  - Merge remote-tracking branch 'origin/master' into 8295500.accordion.skin
>>  - Merge remote-tracking branch 'origin/master' into 8295500.accordion.skin
>>  - 8295500: cleanup
>>  - Merge remote-tracking branch 'origin/master' into 8295500.accordion.skin
>>  - Merge branch '8294809.listener.helper' into 8295500.accordion.skin
>>  - 8294809: generics
>>  - Merge branch '8294809.listener.helper' into 8295500.accordion.skin
>>  - 8294809: is alive
>>  - Merge branch '8294809.listener.helper' into 8295500.accordion.skin
>>  - ... and 19 more: https://git.openjdk.org/jfx/compare/4a19fe71...8da3b64f
>
> Looks good to me!

@aghaisas could you please re-review this PR?  I've added some extra comments and whitespace hoping that will avoid further merge conflicts.

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PR: https://git.openjdk.org/jfx/pull/920