RFR: 8208088: Memory Leak in ControlAcceleratorSupport

[Ambarish Rapte]

On Sat, 20 Mar 2021 13:11:55 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> The new unit test fails on all platforms, as you can see from the GitHub actions log:

The test failed because, change listeners added by other tests get accumulated in the `changeListenerMap`. These listeners can get GCed only if the tests correctly cleanup themselves. The test passes if executed individually. 
The test needed correction that, it should not assume the Map to be empty, instead verify fix by using current size of the `changeListenerMap` as reference.
The Windows pre-submit test action has failed because _Task :graphics:compileDecoraNativeShadersWin FAILED_, and not because of the new test.
Please take a look.

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PR: https://git.openjdk.java.net/jfx/pull/429