hg: openjfx/8u-dev/rt: 8189265: Closing stage does not free internal resources

[ajit.ghaisas at oracle.com]

Changeset: 7d67249a6d2c
Author:    aghaisas
Date:      2017-12-05 12:40 +0530
URL:       http://hg.openjdk.java.net/openjfx/8u-dev/rt/rev/7d67249a6d2c

8189265: Closing stage does not free internal resources
Reviewed-by: kcr

! modules/controls/src/main/java/com/sun/javafx/scene/control/skin/BehaviorSkinBase.java
! modules/controls/src/main/java/com/sun/javafx/scene/control/skin/ProgressIndicatorSkin.java
+ modules/controls/src/test/java/javafx/scene/control/ProgressIndicatorTest.java