m_pkthdr.rcvif->if_index broken in recent CURRENT

[Gleb Smirnoff]

  I can see this at least in fxp driver: if I capture packets using
ng_ether(4), and check interface name like this

                printf("idx %d, name %s\n",
                        (*m)->m_pkthdr.rcvif->if_index,
                        (*m)->m_pkthdr.rcvif->if_xname);
I get on console:

idx 0, name fxp0

Really fxp's index is 1 (AFAIK if_index must be > 0), I have checked this
using if_nametoindex() from userland.

-- 
Totus tuus, Glebius.
GLEBIUS-RIPN GLEB-RIPE