From 2f9d4e68ebe4fa1e2645473bfc01976b61d4ae2d Mon Sep 17 00:00:00 2001
From: Tim Schaub <tim.schaub@gmail.com>
Date: Thu, 3 Mar 2016 07:26:45 -0700
Subject: [PATCH] Unregister all listeners on the WebGL context's canvas

---
 src/ol/webgl/context.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/ol/webgl/context.js b/src/ol/webgl/context.js
index 58ab4cfcb9..b7e5324236 100644
--- a/src/ol/webgl/context.js
+++ b/src/ol/webgl/context.js
@@ -163,6 +163,7 @@ ol.webgl.Context.prototype.deleteBuffer = function(buf) {
  * @inheritDoc
  */
 ol.webgl.Context.prototype.disposeInternal = function() {
+  ol.events.unlistenAll(this.canvas_);
   var gl = this.getGL();
   if (!gl.isContextLost()) {
     var key;