If we are cherry-picking a cherry-pick, we should attempt to de-duplicate the cherry-pick, so we don't have linked-lists of cherry-picks. 'git-webkit cherry-pick' already does this, although we should really have 'prepare-commit-msg' own this, because it is often the case that we would like to cherry-pick a cherry-pick but represent this action as a single cherry-pick.
<rdar://problem/112621977>
Pull request: https://github.com/WebKit/WebKit/pull/15955
Committed 266527@main (81d929e4e8c0): <https://commits.webkit.org/266527@main> Reviewed commits have been landed. Closing PR #15955 and removing active labels.
Committed 265870.401@safari-7616-branch (7c9353a83657): <https://commits.webkit.org/265870.401@safari-7616-branch> Reviewed commits have been landed. Closing PR #732 and removing active labels.