hg: openjfx/8u/rt: 8145682: topDocument() returns an incorrect reference for cached Documents

[kevin.rushforth at oracle.com]

Changeset: d721ce8a60b4
Author:    azvegint
Date:      2015-12-20 17:30 +0300
URL:       http://hg.openjdk.java.net/openjfx/8u/rt/rev/d721ce8a60b4

8145682: topDocument() returns an incorrect reference for cached Documents
Reviewed-by: azvegint, kcr
Contributed-by: murali.billa at oracle.com

! modules/web/src/main/native/Source/WebCore/dom/Document.cpp