Avatars missing after recent upgrade (47fd15693)

[wULLSnpAXbWZGYDYyhWTKKspEQoaYxXyhoisqHf]

• Gitea version (or commit ref): 1.15.0+dev-223-g47fd15693
• Git version: built from next, not pertaining to this issue
• Operating system: Arch Linux
• Database:
  • SQLite
• Can you reproduce the bug at https://try.gitea.io:
  • haven't tried

Description

After upgrading to a commit merged by #15301 user-supplied user avatars won't load and org avatars won't load at all.
org avatars that should load from gravatar are looked for locally and end up 404ing

Screenshots

users:

orgs:

[zeripath]

Sorry I think I must have missed pushing a commit up. PR up.