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gitea/services
8b590de186 Fix migration panic due to an empty review comment diff (#28334) (#28362)
Backport #28334 by @lng2020

Fix #28328 
```
func (p *PullRequestComment) GetDiffHunk() string {
	if p == nil || p.DiffHunk == nil {
		return ""
	}
	return *p.DiffHunk
}
```
This function in the package `go-github` may return an empty diff. When
it's empty, the following code will panic because it access `ss[1]`

https://github.com/go-gitea/gitea/blob/ec1feedbf582b05b6a5e8c59fb2457f25d053ba2/services/migrations/gitea_uploader.go#L861-L867

https://github.com/go-gitea/gitea/blob/ec1feedbf582b05b6a5e8c59fb2457f25d053ba2/modules/git/diff.go#L97-L101

Co-authored-by: Nanguan Lin <[email protected]>
2023-12-05 16:58:15 +08:00
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