am acf52af6: am a2a912a7: am cacf9084: am 534ab954: am 10441a6f: am f02c5c9e: am 4d8ed149: Prevent integer underflow if size is below 6

* commit 'acf52af62fcf14d18e4a557319a7307b7ed02c94':
  Prevent integer underflow if size is below 6