Error when adding a point to a trace

[simonduf]

Trace2Dsorted.addPointInternal(...) remove the listener of the point to add by calling remove....

This happen when two point with the x value 0 are added...

java.lang.IllegalStateException: Given tracepoint is not added to a trace.
	at info.monitorenter.gui.util.TracePoint2DUtil.getTraceFromTracePoint(TracePoint2DUtil.java:160) ~[jchart2d-code-0.0.1-rc.6.jar:na]
	at info.monitorenter.gui.util.TracePoint2DUtil.getChartFromTracePoint(TracePoint2DUtil.java:62) ~[jchart2d-code-0.0.1-rc.6.jar:na]
	at info.monitorenter.gui.chart.traces.ATrace2D.calculatePointBounds(ATrace2D.java:651) ~[jchart2d-code-0.0.1-rc.6.jar:na]
	at info.monitorenter.gui.chart.traces.ATrace2D.firePointChanged(ATrace2D.java:1157) ~[jchart2d-code-0.0.1-rc.6.jar:na]
	at info.monitorenter.gui.chart.traces.ATrace2D.firePointAdded(ATrace2D.java:1046) ~[jchart2d-code-0.0.1-rc.6.jar:na]
	at info.monitorenter.gui.chart.traces.ATrace2D.addPoint(ATrace2D.java:427) ~[jchart2d-code-0.0.1-rc.6.jar:na]
	at info.monitorenter.gui.chart.traces.ATrace2D.addPoint(ATrace2D.java:362) ~[jchart2d-code-0.0.1-rc.6.jar:na]
	at info.monitorenter.gui.chart.traces.ATrace2D.addPoint(ATrace2D.java:334) ~[jchart2d-code-0.0.1-rc.6.jar:na]
	at gui.chart.StaticChart2.newData(StaticChart2.java:252) ~[bin/:na]