am 4837e90f: am 9c5578c1: am 36617c67: am 7374360f: am 4e44b2ee: am 4534ec1a: am 4a5fbf74: am 3cc11bfc: Fix several ineffective integer overflow checks

* commit '4837e90fd1d3fa127ef99652d314ad70f4776221':
  Fix several ineffective integer overflow checks