When "--no-local-port" is used, the last port cannot be used

[YuvalAdler]

In dp_ports.c, dp_ports_lookup() function should be updated for the case of no local port.

struct sw_port *
dp_ports_lookup(struct datapath *dp, uint32_t port_no)
{
// exclude local port from ports_num
uint32_t ports_num = dp->local_port ? dp->ports_num -1 : dp->ports_num;

if (port_no == OFPP_LOCAL) {
    return dp->local_port;
}

if (port_no < 1 || port_no > ports_num) {
    return NULL;
}

return &dp->ports[port_no];

}

[ederlf]

Fixed.
Thank you.