[Demangler] Eliminate a few erroneous "const char *" -> StringRefs.
[Demangler] Eliminate a few erroneous "const char *" -> StringRefs.

Likely causing the recent ASan failure.

nathawes/swift,shajrawi/swift,devincoughlin/swift,airspeedswift/swift,jmgc/swift,lorentey/swift,alblue/swift,aschwaighofer/swift,nathawes/swift,shahmishal/swift,hooman/swift,natecook1000/swift,aschwaighofer/swift,danielmartin/swift,harlanhaskins/swift,allevato/swift,apple/swift,shahmishal/swift,stephentyrone/swift,natecook1000/swift,aschwaighofer/swift,JGiola/swift,airspeedswift/swift,shajrawi/swift,amraboelela/swift,shajrawi/swift,austinzheng/swift,alblue/swift,tkremenek/swift,brentdax/swift,brentdax/swift,tjw/swift,huonw/swift,harlanhaskins/swift,austinzheng/swift,benlangmuir/swift,airspeedswift/swift,jopamer/swift,shahmishal/swift,allevato/swift,shahmishal/swift,JGiola/swift,ahoppen/swift,lorentey/swift,atrick/swift,parkera/swift,jopamer/swift,xwu/swift,gribozavr/swift,devincoughlin/swift,rudkx/swift,harlanhaskins/swift,jopamer/swift,jckarter/swift,nathawes/swift,practicalswift/swift,danielmartin/swift,gregomni/swift,devincoughlin/swift,austinzheng/swift,sschiau/swift,sschiau/swift,gribozavr/swift,natecook1000/swift,glessard/swift,hooman/swift,brentdax/swift,natecook1000/swift,xwu/swift,sschiau/swift,xedin/swift,hooman/swift,tkremenek/swift,alblue/swift,JGiola/swift,gregomni/swift,gregomni/swift,allevato/swift,glessard/swift,karwa/swift,gregomni/swift,benlangmuir/swift,ahoppen/swift,apple/swift,austinzheng/swift,huonw/swift,alblue/swift,practicalswift/swift,gribozavr/swift,jmgc/swift,sschiau/swift,rudkx/swift,CodaFi/swift,jckarter/swift,xedin/swift,danielmartin/swift,sschiau/swift,ahoppen/swift,gribozavr/swift,stephentyrone/swift,tkremenek/swift,rudkx/swift,jckarter/swift,stephentyrone/swift,roambotics/swift,tkremenek/swift,CodaFi/swift,glessard/swift,lorentey/swift,parkera/swift,natecook1000/swift,hooman/swift,practicalswift/swift,airspeedswift/swift,allevato/swift,danielmartin/swift,glessard/swift,allevato/swift,zisko/swift,brentdax/swift,jopamer/swift,danielmartin/swift,jckarter/swift,xedin/swift,harlanhaskins/swift,tjw/swift,karwa/swift,amraboelela/swift,glessard/swift,xwu/swift,airspeedswift/swift,roambotics/swift,gribozavr/swift,atrick/swift,xwu/swift,tjw/swift,jmgc/swift,benlangmuir/swift,jopamer/swift,atrick/swift,amraboelela/swift,atrick/swift,danielmartin/swift,jmgc/swift,alblue/swift,zisko/swift,ahoppen/swift,xedin/swift,atrick/swift,ahoppen/swift,JGiola/swift,jopamer/swift,allevato/swift,apple/swift,brentdax/swift,lorentey/swift,CodaFi/swift,JGiola/swift,nathawes/swift,shajrawi/swift,devincoughlin/swift,tkremenek/swift,benlangmuir/swift,lorentey/swift,zisko/swift,tjw/swift,brentdax/swift,huonw/swift,austinzheng/swift,parkera/swift,sschiau/swift,apple/swift,stephentyrone/swift,huonw/swift,huonw/swift,natecook1000/swift,hooman/swift,lorentey/swift,xwu/swift,jopamer/swift,amraboelela/swift,aschwaighofer/swift,tkremenek/swift,shahmishal/swift,devincoughlin/swift,harlanhaskins/swift,aschwaighofer/swift,huonw/swift,karwa/swift,devincoughlin/swift,JGiola/swift,shahmishal/swift,parkera/swift,xedin/swift,karwa/swift,tjw/swift,glessard/swift,amraboelela/swift,austinzheng/swift,gribozavr/swift,shajrawi/swift,jckarter/swift,zisko/swift,tjw/swift,shajrawi/swift,devincoughlin/swift,amraboelela/swift,atrick/swift,roambotics/swift,roambotics/swift,zisko/swift,stephentyrone/swift,natecook1000/swift,jckarter/swift,parkera/swift,xwu/swift,gribozavr/swift,CodaFi/swift,CodaFi/swift,apple/swift,gregomni/swift,hooman/swift,practicalswift/swift,shahmishal/swift,amraboelela/swift,karwa/swift,practicalswift/swift,benlangmuir/swift,austinzheng/swift,sschiau/swift,rudkx/swift,jmgc/swift,tjw/swift,karwa/swift,nathawes/swift,stephentyrone/swift,devincoughlin/swift,practicalswift/swift,shahmishal/swift,jmgc/swift,nathawes/swift,practicalswift/swift,jckarter/swift,harlanhaskins/swift,sschiau/swift,airspeedswift/swift,CodaFi/swift,xwu/swift,CodaFi/swift,gregomni/swift,brentdax/swift,parkera/swift,roambotics/swift,aschwaighofer/swift,lorentey/swift,aschwaighofer/swift,gribozavr/swift,parkera/swift,jmgc/swift,practicalswift/swift,airspeedswift/swift,hooman/swift,rudkx/swift,alblue/swift,benlangmuir/swift,tkremenek/swift,roambotics/swift,parkera/swift,xedin/swift,zisko/swift,zisko/swift,danielmartin/swift,karwa/swift,xedin/swift,lorentey/swift,shajrawi/swift,stephentyrone/swift,alblue/swift,shajrawi/swift,rudkx/swift,apple/swift,huonw/swift,xedin/swift,harlanhaskins/swift,karwa/swift,nathawes/swift,allevato/swift,ahoppen/swift