[NFC] Make it illegal to reset the interface type to null
[NFC] Make it illegal to reset the interface type to null

nathawes/swift,airspeedswift/swift,jmgc/swift,gribozavr/swift,aschwaighofer/swift,stephentyrone/swift,xwu/swift,ahoppen/swift,parkera/swift,airspeedswift/swift,rudkx/swift,gribozavr/swift,parkera/swift,hooman/swift,atrick/swift,gregomni/swift,tkremenek/swift,roambotics/swift,aschwaighofer/swift,roambotics/swift,CodaFi/swift,ahoppen/swift,atrick/swift,aschwaighofer/swift,stephentyrone/swift,gregomni/swift,nathawes/swift,roambotics/swift,hooman/swift,aschwaighofer/swift,allevato/swift,stephentyrone/swift,roambotics/swift,rudkx/swift,JGiola/swift,apple/swift,roambotics/swift,allevato/swift,jmgc/swift,glessard/swift,apple/swift,hooman/swift,glessard/swift,gribozavr/swift,allevato/swift,jmgc/swift,parkera/swift,atrick/swift,tkremenek/swift,xwu/swift,aschwaighofer/swift,parkera/swift,apple/swift,jmgc/swift,nathawes/swift,jmgc/swift,roambotics/swift,JGiola/swift,xwu/swift,apple/swift,airspeedswift/swift,xwu/swift,jckarter/swift,benlangmuir/swift,jmgc/swift,JGiola/swift,harlanhaskins/swift,jckarter/swift,allevato/swift,hooman/swift,harlanhaskins/swift,hooman/swift,xwu/swift,CodaFi/swift,gribozavr/swift,tkremenek/swift,parkera/swift,glessard/swift,aschwaighofer/swift,jckarter/swift,harlanhaskins/swift,ahoppen/swift,stephentyrone/swift,hooman/swift,allevato/swift,benlangmuir/swift,airspeedswift/swift,CodaFi/swift,benlangmuir/swift,glessard/swift,parkera/swift,CodaFi/swift,CodaFi/swift,benlangmuir/swift,atrick/swift,gribozavr/swift,benlangmuir/swift,rudkx/swift,stephentyrone/swift,stephentyrone/swift,gregomni/swift,xwu/swift,rudkx/swift,atrick/swift,rudkx/swift,nathawes/swift,xwu/swift,gregomni/swift,airspeedswift/swift,parkera/swift,jckarter/swift,nathawes/swift,CodaFi/swift,hooman/swift,benlangmuir/swift,airspeedswift/swift,tkremenek/swift,jmgc/swift,tkremenek/swift,jckarter/swift,JGiola/swift,jckarter/swift,nathawes/swift,ahoppen/swift,CodaFi/swift,ahoppen/swift,gribozavr/swift,apple/swift,harlanhaskins/swift,aschwaighofer/swift,atrick/swift,apple/swift,harlanhaskins/swift,JGiola/swift,nathawes/swift,ahoppen/swift,rudkx/swift,tkremenek/swift,glessard/swift,airspeedswift/swift,allevato/swift,gregomni/swift,allevato/swift,tkremenek/swift,gregomni/swift,harlanhaskins/swift,gribozavr/swift,jckarter/swift,harlanhaskins/swift,stephentyrone/swift,glessard/swift,gribozavr/swift,JGiola/swift,parkera/swift