[CSDiagnostics] Use join() directly and remove the if/else
[CSDiagnostics] Use join() directly and remove the if/else

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