minor fix for ia64
minor fix for ia64

DoooReyn/pbc,xiaoqunSun/pbc,MonCoder/pbc,CheyiLin/pbc,yubobarye/pbc,cloudwu/pbc,owent-contrib/pbc,boyuegame/pbc,owent-contrib/pbc,zh423328/pbc,cloudwu/pbc,zhuoyikang/pbc