[Bug] [Api] /orgs/{:orgname}/repos POST endpoint is broken

[iondune]

• Gitea version (or commit ref): 1.12.0+dev-87-g665d7e91a
• Git version:
• Operating system: Ubuntu 18.04.3 LTS
• Database (use [x]):
  • PostgreSQL
  • MySQL
  • MSSQL
  • SQLite
• Can you reproduce the bug at https://try.gitea.io:
  • Yes (https://try.gitea.io/api/v1/orgs/test_org_3333/repos)
  • No
  • Not relevant
• Log gist: https://gist.github.com/iondune/57330f7f5eb4f62b55992aab9b404d2b

Description

I am having trouble using the POST /orgs/<org_name>/repos api endpoint. This is the response I'm getting (with http status 422):

{"message":"org does not exist [id: 0, name: ]","url":"https://try.gitea.io/api/swagger"}

But if I switch to the deprecated /org/<org_name>/repos endpoint, it works just fine. It looks to me like the issue is that CreateOrgRepo is looking for the :org parameter here while the parameter in the route is named :orgname here. The deprecated route is working because it uses :org.

[zeripath]

Fixed by #11339 and the breakout backport #11381