hg: openjfx/8u-dev/rt: Fix RT-39805: NPE when chaining Lighting effect with other effects

[james.graham at oracle.com]

Changeset: bc0cc62847c7
Author:    flar <James.Graham at oracle.com>
Date:      2015-01-13 13:59 -0800
URL:       http://hg.openjdk.java.net/openjfx/8u-dev/rt/rev/bc0cc62847c7

Fix RT-39805: NPE when chaining Lighting effect with other effects
Reviewed by: kcr

! modules/graphics/src/main/java/com/sun/scenario/effect/PhongLighting.java