hg: openjfx/8u-dev/rt: RT-23828: [SWT, Windows] NPE on Scene$ClickCounter when maximize the window by double click title bar

[steve.x.northover at oracle.com]

Changeset: f783e24e059c
Author:    snorthov
Date:      2014-10-20 17:13 -0400
URL:       http://hg.openjdk.java.net/openjfx/8u-dev/rt/rev/f783e24e059c

RT-23828: [SWT, Windows] NPE on Scene$ClickCounter when maximize the window by double click title bar
Summary: Under rare circumstances, SWT gives a mouse up without a down.  This fix avoids a null pointer.
Reviewed by: cyang

! modules/graphics/src/main/java/javafx/scene/Scene.java