RFR: 8277848 Binding and Unbinding to List leads to memory leak [v4]

[Christian Heilmann]

On Tue, 11 Jan 2022 19:04:56 GMT, Florian Kirmaier <fkirmaier at openjdk.org> wrote:

>> Making the initial listener of the ListProperty weak fixes the problem.
>> The same is fixed for Set and Map.
>> Due to a smart implementation, this is done without any performance drawback.
>> (The trick is to have an object, which is both the WeakReference and the Changelistener)
>> By implying the same trick to the InvalidationListener, this should even improve the performance of the collection properties.
>
> Florian Kirmaier has updated the pull request incrementally with one additional commit since the last revision:
> 
>   JDK-8277848
>   Added the 3 requests whitespaces

How to proceed to get this PR reviewed?

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PR: https://git.openjdk.java.net/jfx/pull/689