From 7352ddeb89641e19cd42d85b8dc2163c6717be9a Mon Sep 17 00:00:00 2001
From: Marc Jansen <jansen@terrestris.de>
Date: Fri, 25 Sep 2015 10:41:09 +0200
Subject: [PATCH] Use ol.isDef in assertion

This addresses comment https://github.com/openlayers/ol3/commit/e558b5db639065fa0a7e41012cb9fa2fde7c41d5#commitcomment-13406867
by @elemoine.
---
 src/ol/renderer/maprenderer.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ol/renderer/maprenderer.js b/src/ol/renderer/maprenderer.js
index c588a70080..9b686d9eed 100644
--- a/src/ol/renderer/maprenderer.js
+++ b/src/ol/renderer/maprenderer.js
@@ -140,7 +140,7 @@ ol.renderer.Map.prototype.forEachFeatureAtCoordinate =
    * @return {?} Callback result.
    */
   function forEachFeatureAtCoordinate(feature) {
-    goog.asserts.assert(feature !== undefined, 'received a feature');
+    goog.asserts.assert(ol.isDef(feature), 'received a feature');
     var key = goog.getUid(feature).toString();
     if (!(key in features)) {
       features[key] = true;