am 892e06d1: am 86fb9185: am 75a8776e: am 3cff4324: am 520434cd: am 24acf11d: am 4a131250: am 030d8d0a: Fix several ineffective integer overflow checks

* commit '892e06d1c92e2ea4fbf0a13a785c8235382f6e23':
  Fix several ineffective integer overflow checks