Update utils.js
Update utils.js

adapter_core.js was throwing an error on my iPhone6 because none of the if statements were resolving. Maybe there's a more elegant way of handling iOS, but in general, I think it would be best to have a default at the end of the detectBrowser function so it at least returns and doesn't throw errors
Acidburn0zzz/adapter,jan-ivar/adapter,webrtc/adapter,Acidburn0zzz/adapter,xdumaine/adapter,xdumaine/adapter,Acidburn0zzz/adapter,webrtc/adapter,jan-ivar/adapter