hg: openjfx/8u/rt: 8182977: NullPointerException with HTMLEditor when changing the scene graph

[philip.race at oracle.com]

Changeset: c3c1b3cd7988
Author:    mbilla
Date:      2017-08-21 18:42 +0530
URL:       http://hg.openjdk.java.net/openjfx/8u/rt/rev/c3c1b3cd7988

8182977: NullPointerException with HTMLEditor when changing the scene graph
Reviewed-by: kcr, ghb, arajkumar

! modules/web/src/main/java/com/sun/javafx/scene/web/skin/HTMLEditorSkin.java
+ tests/system/src/test/java/com/sun/javafx/application/SceneGraphHTMLEditorTest.java