From 4b9451de8118f225280afceadce6db228f56f880 Mon Sep 17 00:00:00 2001
From: Tom Payne <twpayne@gmail.com>
Date: Fri, 20 Dec 2013 14:42:05 +0100
Subject: [PATCH] Add extra assertion that feature's geometry is not null

---
 src/ol/source/vectorsource.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/ol/source/vectorsource.js b/src/ol/source/vectorsource.js
index a69c70ca6d..d4c2eb5d82 100644
--- a/src/ol/source/vectorsource.js
+++ b/src/ol/source/vectorsource.js
@@ -160,7 +160,9 @@ ol.source.Vector.prototype.forEachFeatureAtCoordinate =
     function(coordinate, f, opt_obj) {
   var extent = [coordinate[0], coordinate[1], coordinate[0], coordinate[1]];
   return this.forEachFeatureInExtent(extent, function(feature) {
-    if (feature.getGeometry().containsCoordinate(coordinate)) {
+    var geometry = feature.getGeometry();
+    goog.asserts.assert(!goog.isNull(geometry));
+    if (geometry.containsCoordinate(coordinate)) {
       return f.call(opt_obj, feature);
     } else {
       return undefined;