Fix successful return value for `SyncAndGetUserSpecificDiff` (#27152)

A function should not return an error when it is successful.
Otherwise, things like https://discord.com/channels/322538954119184384/322538954119184384/1153705341620600833 happen…

diff --git a/services/gitdiff/gitdiff.go b/services/gitdiff/gitdiff.go
index 4cc093e65debd2575ce5b0d96dbb1b1675799aaf..fd0f32717c4b6709a7636a8972c0f42aa7d71cfc 100644 (file)
--- a/services/gitdiff/gitdiff.go
+++ b/services/gitdiff/gitdiff.go
@@ -1343,7 +1343,7 @@ outer:
                }
        }
 
-       return diff, err
+       return diff, nil
 }
 
 // CommentAsDiff returns c.Patch as *Diff