Runtime: Fix undersized allocation for out-of-line optional cast result.
Runtime: Fix undersized allocation for out-of-line optional cast result.

We accounted for the size difference between T and T? in the inline case, but not the out-of-line case. rdar://problem/27671131

JaSpa/swift,parkera/swift,gribozavr/swift,sschiau/swift,hughbe/swift,devincoughlin/swift,alblue/swift,lorentey/swift,ben-ng/swift,modocache/swift,xedin/swift,rudkx/swift,bitjammer/swift,tardieu/swift,shajrawi/swift,felix91gr/swift,bitjammer/swift,felix91gr/swift,CodaFi/swift,zisko/swift,Jnosh/swift,lorentey/swift,therealbnut/swift,tkremenek/swift,ahoppen/swift,glessard/swift,bitjammer/swift,jmgc/swift,gregomni/swift,xedin/swift,zisko/swift,OscarSwanros/swift,jmgc/swift,therealbnut/swift,hughbe/swift,allevato/swift,Jnosh/swift,ben-ng/swift,tinysun212/swift-windows,huonw/swift,austinzheng/swift,jmgc/swift,hooman/swift,shajrawi/swift,kstaring/swift,airspeedswift/swift,therealbnut/swift,sschiau/swift,JGiola/swift,Jnosh/swift,tjw/swift,stephentyrone/swift,lorentey/swift,benlangmuir/swift,jmgc/swift,karwa/swift,shajrawi/swift,tjw/swift,jtbandes/swift,kstaring/swift,tinysun212/swift-windows,shajrawi/swift,JaSpa/swift,ben-ng/swift,huonw/swift,IngmarStein/swift,devincoughlin/swift,gottesmm/swift,arvedviehweger/swift,arvedviehweger/swift,jckarter/swift,deyton/swift,alblue/swift,stephentyrone/swift,apple/swift,return/swift,xedin/swift,gottesmm/swift,stephentyrone/swift,austinzheng/swift,nathawes/swift,gmilos/swift,parkera/swift,djwbrown/swift,nathawes/swift,gribozavr/swift,karwa/swift,manavgabhawala/swift,tkremenek/swift,xwu/swift,shahmishal/swift,swiftix/swift,felix91gr/swift,frootloops/swift,gribozavr/swift,gregomni/swift,return/swift,stephentyrone/swift,gregomni/swift,swiftix/swift,JaSpa/swift,allevato/swift,jmgc/swift,atrick/swift,karwa/swift,gmilos/swift,gmilos/swift,gottesmm/swift,danielmartin/swift,calebd/swift,aschwaighofer/swift,codestergit/swift,shahmishal/swift,karwa/swift,tardieu/swift,atrick/swift,parkera/swift,airspeedswift/swift,lorentey/swift,jckarter/swift,gribozavr/swift,OscarSwanros/swift,lorentey/swift,hughbe/swift,tjw/swift,tjw/swift,austinzheng/swift,parkera/swift,benlangmuir/swift,swiftix/swift,tjw/swift,xedin/swift,milseman/swift,milseman/swift,roambotics/swift,therealbnut/swift,shahmishal/swift,nathawes/swift,shahmishal/swift,devincoughlin/swift,xwu/swift,jckarter/swift,frootloops/swift,karwa/swift,huonw/swift,deyton/swift,practicalswift/swift,airspeedswift/swift,glessard/swift,jckarter/swift,danielmartin/swift,shajrawi/swift,huonw/swift,natecook1000/swift,manavgabhawala/swift,parkera/swift,kstaring/swift,atrick/swift,lorentey/swift,practicalswift/swift,gottesmm/swift,manavgabhawala/swift,tkremenek/swift,gottesmm/swift,djwbrown/swift,jmgc/swift,hughbe/swift,JGiola/swift,atrick/swift,frootloops/swift,return/swift,kperryua/swift,brentdax/swift,return/swift,natecook1000/swift,felix91gr/swift,danielmartin/swift,rudkx/swift,rudkx/swift,swiftix/swift,lorentey/swift,felix91gr/swift,calebd/swift,manavgabhawala/swift,apple/swift,codestergit/swift,bitjammer/swift,harlanhaskins/swift,gmilos/swift,benlangmuir/swift,return/swift,arvedviehweger/swift,austinzheng/swift,nathawes/swift,milseman/swift,jckarter/swift,hughbe/swift,zisko/swift,benlangmuir/swift,allevato/swift,danielmartin/swift,allevato/swift,devincoughlin/swift,hughbe/swift,parkera/swift,roambotics/swift,jtbandes/swift,parkera/swift,tardieu/swift,shahmishal/swift,brentdax/swift,gregomni/swift,danielmartin/swift,kperryua/swift,CodaFi/swift,jtbandes/swift,sschiau/swift,aschwaighofer/swift,Jnosh/swift,djwbrown/swift,felix91gr/swift,kstaring/swift,zisko/swift,jopamer/swift,alblue/swift,gregomni/swift,allevato/swift,brentdax/swift,tkremenek/swift,tinysun212/swift-windows,amraboelela/swift,roambotics/swift,karwa/swift,gribozavr/swift,jmgc/swift,harlanhaskins/swift,Jnosh/swift,jckarter/swift,austinzheng/swift,modocache/swift,airspeedswift/swift,jtbandes/swift,allevato/swift,devincoughlin/swift,return/swift,frootloops/swift,brentdax/swift,ben-ng/swift,sschiau/swift,natecook1000/swift,roambotics/swift,xedin/swift,jtbandes/swift,practicalswift/swift,glessard/swift,gregomni/swift,natecook1000/swift,karwa/swift,swiftix/swift,apple/swift,amraboelela/swift,jopamer/swift,codestergit/swift,kstaring/swift,kperryua/swift,huonw/swift,OscarSwanros/swift,deyton/swift,sschiau/swift,practicalswift/swift,apple/swift,austinzheng/swift,gmilos/swift,rudkx/swift,uasys/swift,airspeedswift/swift,frootloops/swift,modocache/swift,jopamer/swift,OscarSwanros/swift,amraboelela/swift,tinysun212/swift-windows,brentdax/swift,milseman/swift,ahoppen/swift,tkremenek/swift,jtbandes/swift,harlanhaskins/swift,ben-ng/swift,therealbnut/swift,CodaFi/swift,JaSpa/swift,uasys/swift,stephentyrone/swift,calebd/swift,shahmishal/swift,tkremenek/swift,tjw/swift,modocache/swift,glessard/swift,JGiola/swift,gmilos/swift,zisko/swift,alblue/swift,shajrawi/swift,IngmarStein/swift,hooman/swift,sschiau/swift,ben-ng/swift,practicalswift/swift,xwu/swift,swiftix/swift,aschwaighofer/swift,amraboelela/swift,amraboelela/swift,kperryua/swift,xwu/swift,ahoppen/swift,Jnosh/swift,IngmarStein/swift,aschwaighofer/swift,xwu/swift,aschwaighofer/swift,karwa/swift,bitjammer/swift,tardieu/swift,codestergit/swift,lorentey/swift,return/swift,gottesmm/swift,benlangmuir/swift,practicalswift/swift,aschwaighofer/swift,modocache/swift,arvedviehweger/swift,xedin/swift,tinysun212/swift-windows,aschwaighofer/swift,rudkx/swift,IngmarStein/swift,OscarSwanros/swift,ahoppen/swift,CodaFi/swift,shahmishal/swift,xedin/swift,devincoughlin/swift,brentdax/swift,deyton/swift,alblue/swift,OscarSwanros/swift,tardieu/swift,milseman/swift,nathawes/swift,CodaFi/swift,tardieu/swift,zisko/swift,amraboelela/swift,uasys/swift,roambotics/swift,djwbrown/swift,airspeedswift/swift,bitjammer/swift,codestergit/swift,huonw/swift,tardieu/swift,deyton/swift,hughbe/swift,devincoughlin/swift,deyton/swift,tinysun212/swift-windows,tkremenek/swift,uasys/swift,apple/swift,frootloops/swift,atrick/swift,gottesmm/swift,ben-ng/swift,calebd/swift,natecook1000/swift,practicalswift/swift,JaSpa/swift,therealbnut/swift,devincoughlin/swift,swiftix/swift,arvedviehweger/swift,djwbrown/swift,calebd/swift,bitjammer/swift,hooman/swift,gribozavr/swift,tjw/swift,JaSpa/swift,OscarSwanros/swift,frootloops/swift,calebd/swift,shahmishal/swift,milseman/swift,kperryua/swift,danielmartin/swift,ahoppen/swift,ahoppen/swift,practicalswift/swift,gribozavr/swift,manavgabhawala/swift,harlanhaskins/swift,uasys/swift,felix91gr/swift,stephentyrone/swift,uasys/swift,natecook1000/swift,stephentyrone/swift,harlanhaskins/swift,sschiau/swift,jopamer/swift,danielmartin/swift,alblue/swift,CodaFi/swift,xwu/swift,modocache/swift,gmilos/swift,brentdax/swift,IngmarStein/swift,harlanhaskins/swift,gribozavr/swift,kstaring/swift,calebd/swift,allevato/swift,djwbrown/swift,codestergit/swift,parkera/swift,hooman/swift,JGiola/swift,JGiola/swift,harlanhaskins/swift,xwu/swift,austinzheng/swift,therealbnut/swift,apple/swift,jtbandes/swift,codestergit/swift,jopamer/swift,arvedviehweger/swift,atrick/swift,modocache/swift,shajrawi/swift,hooman/swift,glessard/swift,uasys/swift,roambotics/swift,IngmarStein/swift,jckarter/swift,deyton/swift,djwbrown/swift,glessard/swift,airspeedswift/swift,xedin/swift,jopamer/swift,benlangmuir/swift,manavgabhawala/swift,hooman/swift,rudkx/swift,JaSpa/swift,shajrawi/swift,alblue/swift,huonw/swift,IngmarStein/swift,tinysun212/swift-windows,zisko/swift,JGiola/swift,CodaFi/swift,arvedviehweger/swift,kperryua/swift,sschiau/swift,hooman/swift,kstaring/swift,nathawes/swift,kperryua/swift,jopamer/swift,Jnosh/swift,natecook1000/swift,manavgabhawala/swift,nathawes/swift,milseman/swift,amraboelela/swift