fix none encrypt key size
fix none encrypt key size

monokoo/shadowsocks,loveward/yingsuo,ZeroClover/shadowsocksr,monokoo/shadowsocks,miyouzi/ch-docker-ssr,shadowsocksr-backup/shadowsocksr,shadowsocksR-private/shadowsocksR,miyouzi/ch-docker-ssr,shadowsocksr-backup/shadowsocksr,shadowsocksR-private/shadowsocksR,loveward/yingsuo