From 5650e9cde93e6ec8862dd1aa214c3e87c536b05a Mon Sep 17 00:00:00 2001
From: "Michael J. Cohen" <mjc@kernel.org>
Date: Wed, 24 Apr 2013 14:25:13 -0300
Subject: [PATCH] Check if windowResize argument is undefined

When loading nv3d without creating a chart, ```nv.utils.windowResize``` is called somewhere with an undefined argument, so we should check if it is undefined and not try to replace the old event handler, otherwise every resize event generates an error because ```fun``` is undefined.

I was able to produce  by including the following libs and triggering onresize events.

```
nvd3/lib/d3.v2.js
nvd3/src/core.js
nvd3/src/tooltip.js
nvd3/src/utils.js
nvd3/src/models/lineWithFocusChart.js
nvd3/src/models/legend.js
nvd3/src/models/axis.js
nvd3/src/models/line.js
nvd3/src/models/scatter.js
```

Sponsored-by: CentroNet Marketing
---
 src/utils.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/utils.js b/src/utils.js
index ce298c3..9628d77 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -30,6 +30,7 @@ nv.utils.windowSize = function() {
 // Easy way to bind multiple functions to window.onresize
 // TODO: give a way to remove a function after its bound, other than removing all of them
 nv.utils.windowResize = function(fun){
+  if (fun === undefined) return;
   var oldresize = window.onresize;
 
   window.onresize = function(e) {