Fix nil ref (#8281)

diff --git a/models/issue_xref.go b/models/issue_xref.go
index 3631bf3246ad798bc25b2bd068442535c013d15f..1cc0bcfe6a11e4fee287ada0f314fe35bb93e893 100644 (file)
--- a/models/issue_xref.go
+++ b/models/issue_xref.go
@@ -197,7 +197,7 @@ func (issue *Issue) isValidCommentReference(e Engine, ctx *crossReferencesContex
                return nil, err
        }
        // Check user permissions
-       if refIssue.Repo.ID != ctx.OrigIssue.Repo.ID {
+       if refIssue.RepoID != ctx.OrigIssue.RepoID {
                perm, err := getUserRepoPermission(e, refIssue.Repo, ctx.Doer)
                if err != nil {
                        return nil, err