Call ObservableList#clear() for LineChart result on IndexOutOfBoundsException

Reproduce on javafx_sdk-2_1_0-beta-b12 and javafx_sdk-2_1_0-beta-b14

Exception thrown:
Exception in runnable
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.rangeCheck(ArrayList.java:604)
at java.util.ArrayList.get(ArrayList.java:382)
at com.sun.javafx.collections.ObservableListWrapper.get(ObservableListWrapper.java:208)
at javafx.scene.chart.LineChart.dataItemRemoved(LineChart.java:262)
at javafx.scene.chart.XYChart.dataItemsChanged(XYChart.java:469)
at javafx.scene.chart.XYChart.access$2500(XYChart.java:72)
at javafx.scene.chart.XYChart$Series$1.onChanged(XYChart.java:1461)
at com.sun.javafx.collections.ListListenerHelper$SingleChange.fireValueChangedEvent(ListListenerHelper.java:134)
at com.sun.javafx.collections.ListListenerHelper.fireValueChangedEvent(ListListenerHelper.java:48)
at com.sun.javafx.collections.ObservableListWrapper.callObservers(ObservableListWrapper.java:97)
at com.sun.javafx.collections.ObservableListWrapper.clear(ObservableListWrapper.java:184)
at fr.kensai.fx.charts.line.LineChartApplication$2$1.run(LineChartApplication.java:101)
at com.sun.javafx.application.PlatformImpl$3.run(PlatformImpl.java:141)
at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
at com.sun.glass.ui.gtk.GtkApplication$2$1.run(GtkApplication.java:79)
at java.lang.Thread.run(Thread.java:722)


Code in attachement.