hg: openjfx/2.2/controls/rt: fix RT-21532 resizing areachart to a too small size can block the whole application & RT-20989 UI is freezed after changing tick unit to negative value

[hang.vo at oracle.com]

Changeset: 535fa5b98147
Author:    Paru Somashekar <paru.somashekar at oracle.com>
Date:      2012-05-22 11:28 -0700
URL:       http://hg.openjdk.java.net/openjfx/2.2/controls/rt/rev/535fa5b98147

fix RT-21532 resizing areachart to a too small size can block the whole application & RT-20989 UI is freezed after changing tick unit to negative value

! javafx-ui-charts/src/javafx/scene/chart/XYChart.java
! javafx-ui-controls/src/com/sun/javafx/charts/Legend.java
! javafx-ui-controls/src/javafx/scene/chart/NumberAxis.java