check asset ranges for overflow
check asset ranges for overflow

ensure balances don't overflow wherever they are changed


Former-commit-id: d956a6166e88074885efd7c50ebd21be8a6aa8be
syscoin/syscoin,syscoin/syscoin2,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin2,syscoin/syscoin2,syscoin/syscoin2,syscoin/syscoin,syscoin/syscoin2,syscoin/syscoin2