Can't update to 1.1.x version : duplicat key

[camlafit]

• Gitea version (or commit ref): 1.0.2 to 1.1.x
• Git version: 2.1.4
• Operating system: Jessie 386
• Database (use [x]):
  • [ ] PostgreSQL
  • [x] MySQL
  • [ ] MSSQL
  • [ ] SQLite
• Can you reproduce the bug at https://try.gitea.io:
  • [ ] Yes (provide example URL)
  • [ ] No
  • [x] Not relevant

Description

When I update binary from dl.gitea.org and overwrite gitea binary, I can't execute it.

2017/03/20 17:30:58 [I] Log Mode: File(Info)
2017/03/20 17:30:58 [I] XORM Log Mode: File(Info)
2017/03/20 17:30:58 [I] Cache Service Enabled
2017/03/20 17:30:58 [I] Session Service Enabled
2017/03/20 17:30:58 [I] Migration: create repo unit table and add units for all repos
2017/03/20 17:30:58 [...itea/routers/init.go:54 GlobalInit()] [E] Failed to initialize ORM engine: migrate: do migrate: CreateIndexes RepoUnit: Error 1061: Duplicate key name 'IDX_repo_unit_S'

[cez81]

I think this is same issue as #1261, just different database.