2986ce7f6ad775a86e1bae76a01473eadcc7339a,src/main/java/org/jfree/chart/fx/ChartCanvas.java,ChartCanvas,ChartCanvas,#JFreeChart#,136

Before Change


    public ChartCanvas(JFreeChart chart) {
        ParamChecks.nullNotPermitted(chart, "chart");
        this.chart = chart;
        this.chart.addChangeListener(this);
        this.tooltip = null;
        this.tooltipEnabled = true;
        this.chartMouseListeners = new ArrayList<ChartMouseListenerFX>();

After Change


     */
    public ChartCanvas(JFreeChart chart) {
        this.chart = chart;
        if (this.chart != null) {
            this.chart.addChangeListener(this);
        }
        this.tooltip = null;
        this.tooltipEnabled = true;