CommentList.loadLabels keyed the result map by label.ID but looked up by
comment.ID, so every label event fell back to individual DB queries.
This caused log spam for any comment where the label was deleted, since
ToTimelineComment calls LoadLabel unconditionally for all comment types
including those with LabelID=0.
Fix the map key, skip the query when LabelID=0, demote the now rarely
triggered orphaned-label log to Debug, and fix a typo ("Commit" ->
"Comment") in that message.
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Signed-off-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
47565ae93e