hg: openjfx/8/controls/rt: fix NPE in CssStyleHelper found while running Shapes3DSceneLightTester

[hang.vo at oracle.com]

Changeset: ec82a5c0079b
Author:    David Grieve<david.grieve at oracle.com>
Date:      2013-09-03 12:13 -0400
URL:       http://hg.openjdk.java.net/openjfx/8/controls/rt/rev/ec82a5c0079b

fix NPE in CssStyleHelper found while running Shapes3DSceneLightTester

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