fix assert_port_profile to show clearer error message
fix assert_port_profile to show clearer error message

leavesbnw/picrin,koba-e964/picrin,leavesbnw/picrin,omasanori/picrin,picrin-scheme/picrin,ktakashi/picrin,ktakashi/picrin,omasanori/picrin,leavesbnw/picrin,ktakashi/picrin,koba-e964/picrin,dcurrie/picrin,koba-e964/picrin,picrin-scheme/picrin,dcurrie/picrin