Fix broken short-circuit return in OrderedMap.append
Fix broken short-circuit return in OrderedMap.append

kiejo/prosemirror,salzhrani/prosemirror,salzhrani/prosemirror,tzuhsiulin/prosemirror,salzhrani/prosemirror,kiejo/prosemirror,kiejo/prosemirror,tzuhsiulin/prosemirror,tzuhsiulin/prosemirror