hi,

in https://musicbrainz.org/edit/54303815 I stumbled upon the case where a setlist.fm URL dind't find a duplicate.

URL that was already linked:
http://www.setlist.fm/setlists/courtney-barnett-6bde8236.html

URL that I linked:
https://www.setlist.fm/setlists/courtney-barnett-6bde8236.html

The URL cleanup didn't warn me, that I was about to add a duplicate. It would be great if the script would catch that case or even edit the old URL to use HTTPS instead of HTTP.

Have a nice day,
yeeeargh