hg: openjfx/8u-dev/rt: RT-39569: ConcurrentModificationException when closing APPLICATION_MODAL dialog

[kevin.rushforth at oracle.com]

Changeset: 5c4ee9cb5661
Author:    kcr
Date:      2015-06-10 08:20 -0700
URL:       http://hg.openjdk.java.net/openjfx/8u-dev/rt/rev/5c4ee9cb5661

RT-39569: ConcurrentModificationException when closing APPLICATION_MODAL dialog
Reviewed-by: ddhill

! modules/graphics/src/main/java/com/sun/javafx/tk/quantum/GlassStage.java