Remove goog.array.extend

src/ol/format/xmlfeatureformat.js

@@ -1,9 +1,9 @@
 goog.provide('ol.format.XMLFeature');
 
-goog.require('goog.array');
 goog.require('goog.asserts');
 goog.require('goog.dom.NodeType');
 goog.require('goog.dom.xml');
+goog.require('ol.array');
 goog.require('ol.format.Feature');
 goog.require('ol.format.FormatType');
 goog.require('ol.proj');
@@ -108,7 +108,7 @@ ol.format.XMLFeature.prototype.readFeaturesFromDocument = function(
   var n;
   for (n = doc.firstChild; n; n = n.nextSibling) {
     if (n.nodeType == goog.dom.NodeType.ELEMENT) {
-      goog.array.extend(features, this.readFeaturesFromNode(n, opt_options));
+      ol.array.extend(features, this.readFeaturesFromNode(n, opt_options));
     }
   }
   return features;