title: array.prototype.foreach called on null or undefined highcharts
body: <p>I am working on Highcharts highmaps rich information on click chart.First time load the information by json array and its working fine.But when I am filter data using filters and load chart again it`s give me same error <strong>array.prototype.foreach called on null or undefined highcharts</strong> at below lines.What is solution for this?</p>
  
  <pre><code>proceed.apply(this, Array.prototype.slice.call(arguments, 1));
  var points = mapChart.getSelectedPoints();
  </code></pre>
  
  <p>Below link I am using as reference:
          <a href="http://jsfiddle.net/gh/get/library/pure/highcharts/highcharts/tree/master/samples/maps/demo/rich-info/" rel="nofollow noreferrer">http://jsfiddle.net/gh/get/library/pure/highcharts/highcharts/tree/master/samples/maps/demo/rich-info/</a></p>