MemAccessUtils: change the interface of getProjectionPath to Optional value
MemAccessUtils: change the interface of getProjectionPath to Optional value

Sometions we don't have a projection path for each ref_elem_addr - fixes a compiler crash in Deferred in the Source Compatibility Suite

When checking if two storage locations are distinct from one another, play it safe in such a case.

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