Resolve JS hint errors

Minor touch up so it passes validation
Thanks @kristerkari , that's what I was looking for.  If you actually just load the page with the script tag inline, I don't believe this error occurs.  There's something different about the injected JS -- it looks like the injected scripts observe the undefined behavior of SES whereas the page-loaded scripts do not.  

Anyway. I got a simple karma/jasmine set up and was able to reproduce --enabling me to confidently refactor that block.  Here's the commit: https://github.com/gkindel/CSV-JS/commit/4f37fae21f9d900b122ce6b03810005e687c8a17 Should be boring simple now.