./setup correct for IA_AVATAR_FOLDER

Description

Corrected the setup to correctly set the IA_AVATAR_FOLDER.
The problem was that "realpath" returns null on non-existing folders

Testing Done

Ship it!

I hope you tested that this properly created the folder. From what I see, it calls make-avatar-folder, so it should be good, but I didn't test it. :P

You have a pending review.