From 7ceb7a439e78cbe80ce1c80b2d49e25e6c451e4a Mon Sep 17 00:00:00 2001
From: Marc Jansen <jansen@terrestris.de>
Date: Tue, 29 Sep 2015 15:21:41 +0200
Subject: [PATCH] Remove goog.isNull in webgl classes

---
 src/ol/webgl/context.js | 4 ++--
 src/ol/webgl/webgl.js   | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/ol/webgl/context.js b/src/ol/webgl/context.js
index 6b95937be5..ad9461c561 100644
--- a/src/ol/webgl/context.js
+++ b/src/ol/webgl/context.js
@@ -93,7 +93,7 @@ ol.webgl.Context = function(canvas, gl) {
   // use the OES_element_index_uint extension if available
   if (this.hasOESElementIndexUint) {
     var ext = gl.getExtension('OES_element_index_uint');
-    goog.asserts.assert(!goog.isNull(ext),
+    goog.asserts.assert(ext,
         'Failed to get extension "OES_element_index_uint"');
   }
 
@@ -205,7 +205,7 @@ ol.webgl.Context.prototype.getGL = function() {
  * @return {WebGLFramebuffer} The hit detection frame buffer.
  */
 ol.webgl.Context.prototype.getHitDetectionFramebuffer = function() {
-  if (goog.isNull(this.hitDetectionFramebuffer_)) {
+  if (!this.hitDetectionFramebuffer_) {
     this.initHitDetectionFramebuffer_();
   }
   return this.hitDetectionFramebuffer_;
diff --git a/src/ol/webgl/webgl.js b/src/ol/webgl/webgl.js
index 6b39a1edc7..2ed574eea0 100644
--- a/src/ol/webgl/webgl.js
+++ b/src/ol/webgl/webgl.js
@@ -34,7 +34,7 @@ ol.webgl.getContext = function(canvas, opt_attributes) {
   for (i = 0; i < ii; ++i) {
     try {
       context = canvas.getContext(ol.webgl.CONTEXT_IDS_[i], opt_attributes);
-      if (!goog.isNull(context)) {
+      if (context) {
         return /** @type {!WebGLRenderingContext} */ (context);
       }
     } catch (e) {