hg: openjfx/9-dev/rt: 8152106: NPE when pressing Left-Arrow-Key twice on a top-level TreeItem that is expanded

[jonathan.giles at oracle.com]

Changeset: 399b6e242706
Author:    jgiles
Date:      2016-03-30 12:06 +1300
URL:       http://hg.openjdk.java.net/openjfx/9-dev/rt/rev/399b6e242706

8152106: NPE when pressing Left-Arrow-Key twice on a top-level TreeItem that is expanded

! modules/controls/src/main/java/com/sun/javafx/scene/control/behavior/TreeViewBehavior.java
! modules/controls/src/test/java/test/javafx/scene/control/TreeTableViewKeyInputTest.java