hg: openjfx/8/graphics/rt: Fixed RT-32845 WebView keeps permanent back buffer for HTML pages and Canvas objects, can cause NPE (Fix by Jim Graham; tested by Peter Zhelezniakov)

[hang.vo at oracle.com]

Changeset: 2f3d579c8175
Author:    lepopov
Date:      2013-11-21 20:14 +0400
URL:       http://hg.openjdk.java.net/openjfx/8/graphics/rt/rev/2f3d579c8175

Fixed RT-32845 WebView keeps permanent back buffer for HTML pages and Canvas objects, can cause NPE (Fix by Jim Graham; tested by Peter Zhelezniakov)

! modules/web/src/main/java/com/sun/javafx/webkit/prism/WCPageBackBufferImpl.java