Remove some m->m_pkthdr.rcvif dereference to help for upcoming receiving pointer -> index conversion.  No functional change.
Remove some m->m_pkthdr.rcvif dereference to help for upcoming
receiving pointer -> index conversion.  No functional change.

ok claudio@, mikeb@, lteo@

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars