iOS 14上试用了下crash

`
for (index, addr) in buf.enumerated() {
            guard let addr = addr else { continue }
            let addrValue = UInt(bitPattern: addr)
            let symbol = StackSymbolFactory.create(address: addrValue, index: index)
            symbols.append(symbol)
        }
`
debug 发现  let addrValue = UInt(bitPattern: addr)： 14950560437347972172
