OwnerMatch
if (ForceOpt || !OwnerMatch(stat1, &st2))
static int OwnerMatch(struct stat *st1, struct stat *st2);
if (!OwnerMatch(stat1, &st2)) {
!OwnerMatch(stat1, &st2)
!OwnerMatch(st1, &sthl) ||
OwnerMatch(stat1, &st2)
if (!OwnerMatch(stat1, &st2)) {
if (!OwnerMatch(stat1, &st2) &&