image onload callback firing twice on visual tests

[inssein]

Edit: I made the wrong assumption the first time around..

Just checked out master and was going to try and implement glow and shadow on images, but running into a lot of issues.

First, I am trying to run the visual tests. The server kept crashing because headers were already sent. I commented out every test except for "image shadow", and it still crashed. I quickly debugged server.js and realized that in /render and /jpeg, done() fires twice.

Can anyone else confirm?

[inssein]

Not sure if this is new to node v4.2.1, but either way, cleaned it up and fixed the error