am 8b6fabc4: am 18aad5fe: am 24a71e15: Merge "Return non-zero if can\'t locate top of the tree in m/mm/mmm."

* commit '8b6fabc4619f6b1c5c4c1834783268bea0e77afc':
  Return non-zero if can't locate top of the tree in m/mm/mmm.