hg: openjfx/8/graphics/rt: RT-32656: [SwingNode]: correct the code sample with respect to thread safety

[hang.vo at oracle.com]

Changeset: b84125298242
Author:    ant <anton.tarasov at oracle.com>
Date:      2013-09-03 18:55 +0400
URL:       http://hg.openjdk.java.net/openjfx/8/graphics/rt/rev/b84125298242

RT-32656: [SwingNode]: correct the code sample with respect to thread safety
Reviewed-by: art, pchelko

! modules/swing/src/main/java/javafx/embed/swing/SwingNode.java