From e0f94eb0c816eed4df3584dd446cb095607aeb80 Mon Sep 17 00:00:00 2001
From: Gregory Pike <greg@gregpike.ca>
Date: Wed, 8 Oct 2014 16:07:12 -0230
Subject: [PATCH] Handle empty filename bug

---
 lib/DfpUtils.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/DfpUtils.js b/lib/DfpUtils.js
index 835811a..8b58d1a 100644
--- a/lib/DfpUtils.js
+++ b/lib/DfpUtils.js
@@ -35,5 +35,9 @@ module.exports.assetByteArray = function (filename) {
   var fs = require('fs');
   var bitmap = fs.readFileSync(filename);
 
+  if (!filename) {
+    return '';
+  }
+
   return new Buffer(bitmap).toString('base64');
 };