encode int array error

[powerpeng]

https://github.com/zhangshiqian1214/sproto-js/blob/435117b3b33ced6f90822651cad6f3f22a60aa8d/sproto.js#L722C60-L722C71

should be : uint32_to_uint64(negative, buffer, header_idx + 1 + i * 8);