hg: openjfx/8/graphics/rt: Fix for RT-29970: FXCanvas, JFXPanel: Exception when closing window

[hang.vo at oracle.com]

Changeset: 87cc68e3baa4
Author:    Artem Ananiev <artem.ananiev at oracle.com>
Date:      2013-04-29 19:09 +0400
URL:       http://hg.openjdk.java.net/openjfx/8/graphics/rt/rev/87cc68e3baa4

Fix for RT-29970: FXCanvas, JFXPanel: Exception when closing window
Reviewed-by: Steve Northover

! javafx-ui-quantum/src/com/sun/javafx/tk/quantum/EmbeddedPainter.java
! javafx-ui-quantum/src/com/sun/javafx/tk/quantum/EmbeddedScene.java