add/remove issue dependency failing

[bhalbright]

Adding or removing a dependency in the gitea user interface is failing, user gets an error 500 and the dependency is not added or removed.

• Gitea version (or commit ref): 30181d4
• Git version: version 2.19.1.windows.1
• Operating system: Windows 10
• Database (use [x]):
  • PostgreSQL
  • MySQL
  • MSSQL
  • SQLite
• Can you reproduce the bug at https://try.gitea.io:
  • Yes (provide example URL)
  • No
  • Not relevant
• Log gist:
  2019/12/23 22:36:18 ...les/context/panic.go:35:1() [E] PANIC:: runtime error: invalid memory address or nil pointer dereference
  E:/Go/src/runtime/panic.go:82 (0x444f55)
  panicmem: panic(memoryError)
  E:/Go/src/runtime/signal_windows.go:233 (0x444df0)
  sigpanic: panicmem()
  E:/dev/Go/src/code.gitea.io/gitea/models/repo.go:537 (0xdd6752)
  (*Repository).getOwnerName: if len(repo.OwnerName) > 0 {
  E:/dev/Go/src/code.gitea.io/gitea/models/repo.go:563 (0xdd6a59)
  (*Repository).mustOwnerName: if err := repo.getOwnerName(e); err != nil {
  E:/dev/Go/src/code.gitea.io/gitea/models/repo.go:260 (0xd6b5ad)
  (*Repository).MustOwnerName: return repo.mustOwnerName(x)
  E:/dev/Go/src/code.gitea.io/gitea/models/repo.go:265 (0xd6b58c)
  (*Repository).FullName: return repo.MustOwnerName() + "/" + repo.Name
  E:/dev/Go/src/code.gitea.io/gitea/models/repo.go:270 (0xd6b58b)
  (*Repository).HTMLURL: return setting.AppURL + repo.FullName()
  E:/dev/Go/src/code.gitea.io/gitea/models/issue.go:325 (0xd6b58a)
  (*Issue).HTMLURL: return fmt.Sprintf("%s/%s/%d", issue.Repo.HTMLURL(), path, issue.Index)
  E:/dev/Go/src/code.gitea.io/gitea/routers/repo/issue_dependency.go:33 (0x131c655)
  AddDependency: defer ctx.Redirect(issue.HTMLURL(), http.StatusSeeOther)

Description

You get an error 500 from an issue page when you try to either add or remove a dependency

[6543]

does #9484 close this? - then this need to be closed