Only post the 'Retry' message when Danger has anything to say
requested to merge 219025-danger-bot-shouldn-t-post-a-message-inviting-to-retry-when-it-s-the-only-message-posted into master
What does this MR do?
In some rare cases, Danger doesn't have anything to say. In those cases, we shouldn't post the "You can retry the danger-review job" message at all.
Closes #219025 (closed).
Edited by Yorick Peterse