RFR: 8264330: Scene MouseHandler is referencing removed nodes

[Marius Hanl]

On Wed, 31 Mar 2021 05:36:06 GMT, John Hendrikx <jhendrikx at openjdk.org> wrote:

> Small fix to clear a reference to a removed node left by Scene$MouseHandler.

modules/javafx.graphics/src/test/java/test/javafx/scene/SceneTest.java line 978:

> 976: 
> 977:     @Test public void testNoReferencesRemainToRemovedNodeAfterBeingClicked() {
> 978:         StubToolkit toolkit = (StubToolkit) Toolkit.getToolkit();

This cast isn't necessary, is it?

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PR: https://git.openjdk.java.net/jfx/pull/448