hg: openjfx/8u-dev/rt: RT-35813 TabPane leaks memory if Tab Content is Replaced and the Tab is Never Viewed.

[hang.vo at oracle.com]

Changeset: c888fb474902
Author:    Martin Sladecek <martin.sladecek at oracle.com>
Date:      2014-02-14 10:13 +0100
URL:       http://hg.openjdk.java.net/openjfx/8u-dev/rt/rev/c888fb474902

RT-35813 TabPane leaks memory if Tab Content is Replaced and the Tab is Never Viewed.
Follow up fix in Parent.

! modules/graphics/src/main/java/javafx/scene/Parent.java