bug 412798: Using CSS 'display: none' causes a NPE

The value 'none' is not allowed and causes a NullPointerException in the
layout engine. 

Change-Id: I4934d9f6372182bb00a201d2a253e8960aade813
Signed-off-by: Carsten Hiesserich <carsten.hie@gmail.com>
2 files changed