[Deviantart] Deviations where deviation.videos exists but is empty causes error.

[Wiiplay123]

I've encountered a deviation which causes this to happen, and people in the comments section are complaining that the video won't play, so it's not just a gallery-dl issue.

To fix this, all you have to do is put a check at line 119 of extractor/deviantart.py.

Example:
if "videos" in deviation and len(deviation["videos"]) > 0:

EDIT: The error is "max() arg is an empty sequence"