SourceKit: fix silly copy paste error in CMake
SourceKit: fix silly copy paste error in CMake

Correct the variable setting to setup the compiler as desired.

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