Don't crash when asking IsIUO on an incorrectly-SwiftName-d ClangImporter decl.
Don't crash when asking IsIUO on an incorrectly-SwiftName-d ClangImporter decl.

Sometimes the importer creates property decls with nonsensical types in response to nonsensical
SwiftName attributes on Clang types. Don't crash when this happens and a property accessor happens
to have an unexpected param decl.

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