Adding a comment in review panics

[cornelk]

• Gitea version (or commit ref): v1.12.0-rc2
• Git version:
• Operating system: Linux
• 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:

Description

When using the Add Single Comment button in review view:

2020/06/18 00:16:52 ...les/context/panic.go:35:1() [E] PANIC:: interface conversion: structs.Payloader is *structs.PullRequestPayload, not *structs.IssueCommentPayload
        /usr/local/go/src/runtime/iface.go:260 (0x411bfa)
        /usr/local/go/src/runtime/iface.go:270 (0x411b5f)
        /go/src/code.gitea.io/gitea/modules/webhook/slack.go:324 (0x16da5ce)
        /go/src/code.gitea.io/gitea/modules/webhook/webhook.go:93 (0x16ddbea)
        /go/src/code.gitea.io/gitea/modules/webhook/webhook.go:201 (0x16de74a)
        /go/src/code.gitea.io/gitea/modules/webhook/webhook.go:165 (0x16de366)
        /go/src/code.gitea.io/gitea/modules/notification/webhook/webhook.go:672 (0x16efc72)
        /go/src/code.gitea.io/gitea/modules/notification/notification.go:86 (0x16f1f17)
        /go/src/code.gitea.io/gitea/services/pull/review.go:192 (0x178564b)
        /go/src/code.gitea.io/gitea/services/pull/review.go:97 (0x178441b)
        /go/src/code.gitea.io/gitea/routers/repo/pull_review.go:38 (0x19f51b9)

[lunny]

That's because for HookEventPullRequestComment event, some places use IssueCommentPayload and others use PullRequestPayload

[cornelk]

I am working on a fix for this.