RangeIteration benchmark: remove global variable access from the critical path.
RangeIteration benchmark: remove global variable access from the critical path.

This benchmark was "accidentally" accessing a global variable in the
main iteration loop, which is in some situations very expensive and
has nothing to do with what the benchmark is trying to test.

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