Fix a cast to an IUO which can actually be nil.
Fix a cast to an IUO which can actually be nil.

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