IRGen: Fix undefined behavior virtual class without virtual destructor
IRGen: Fix undefined behavior virtual class without virtual destructor

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