hg: openjfx/jfx-dev/rt: 8220012: Accordion control holds reference to child pane after it is removed

[ajit.ghaisas at oracle.com]

Changeset: ca6835f33285
Author:    aghaisas
Date:      2019-04-04 12:56 +0530
URL:       http://hg.openjdk.java.net/openjfx/jfx-dev/rt/rev/ca6835f33285

8220012: Accordion control holds reference to child pane after it is removed
Reviewed-by: kcr, aghaisas
Contributed-by: thevenet.fred at free.fr

! modules/javafx.controls/src/main/java/javafx/scene/control/skin/AccordionSkin.java
+ tests/system/src/test/java/test/javafx/scene/control/AccordionTitlePaneLeakTest.java