hg: openjfx/8u-dev/rt: RT-38446: [DialogPane] NPE on setExpanded if there's nothing to expand

[jonathan . giles]

Changeset: f166fe3c0547
Author:    jgiles
Date:      2014-08-29 14:07 +1200
URL:       http://hg.openjdk.java.net/openjfx/8u-dev/rt/rev/f166fe3c0547

RT-38446: [DialogPane] NPE on setExpanded if there's nothing to expand

! modules/controls/src/main/java/javafx/scene/control/DialogPane.java