Sema: Don't synthesize materializeForSet if Optional type is missing
Sema: Don't synthesize materializeForSet if Optional type is missing

This fixes a regression in one of the SIL crashers.

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