Revert "Assert rather than going into an infinite loop."
Revert "Assert rather than going into an infinite loop."

This reverts r16307, which is not really useful with r16303 in place.

Swift SVN r16336

ken0nek/swift,LeoShimonaka/swift,hooman/swift,cbrentharris/swift,dduan/swift,rudkx/swift,parkera/swift,atrick/swift,Ivacker/swift,codestergit/swift,jmgc/swift,Jnosh/swift,shahmishal/swift,jmgc/swift,return/swift,OscarSwanros/swift,parkera/swift,cbrentharris/swift,shajrawi/swift,CodaFi/swift,amraboelela/swift,jopamer/swift,felix91gr/swift,jckarter/swift,sdulal/swift,hooman/swift,johnno1962d/swift,xedin/swift,harlanhaskins/swift,harlanhaskins/swift,JaSpa/swift,swiftix/swift.old,IngmarStein/swift,sschiau/swift,gregomni/swift,gribozavr/swift,rudkx/swift,calebd/swift,danielmartin/swift,uasys/swift,LeoShimonaka/swift,kentya6/swift,gribozavr/swift,modocache/swift,alblue/swift,return/swift,zisko/swift,Ivacker/swift,modocache/swift,tinysun212/swift-windows,stephentyrone/swift,adrfer/swift,milseman/swift,shajrawi/swift,tardieu/swift,russbishop/swift,JGiola/swift,zisko/swift,tjw/swift,aschwaighofer/swift,Ivacker/swift,JGiola/swift,djwbrown/swift,LeoShimonaka/swift,Ivacker/swift,milseman/swift,kstaring/swift,airspeedswift/swift,apple/swift,deyton/swift,ahoppen/swift,xedin/swift,gmilos/swift,OscarSwanros/swift,deyton/swift,return/swift,gmilos/swift,karwa/swift,bitjammer/swift,tardieu/swift,tkremenek/swift,kentya6/swift,parkera/swift,arvedviehweger/swift,ben-ng/swift,CodaFi/swift,kusl/swift,KrishMunot/swift,slavapestov/swift,dreamsxin/swift,dduan/swift,sschiau/swift,sdulal/swift,khizkhiz/swift,lorentey/swift,apple/swift,swiftix/swift.old,johnno1962d/swift,aschwaighofer/swift,Ivacker/swift,khizkhiz/swift,emilstahl/swift,return/swift,bitjammer/swift,uasys/swift,natecook1000/swift,nathawes/swift,tardieu/swift,shahmishal/swift,uasys/swift,ken0nek/swift,mightydeveloper/swift,manavgabhawala/swift,airspeedswift/swift,tardieu/swift,khizkhiz/swift,tinysun212/swift-windows,johnno1962d/swift,parkera/swift,aschwaighofer/swift,emilstahl/swift,austinzheng/swift,MukeshKumarS/Swift,sdulal/swift,lorentey/swift,Jnosh/swift,uasys/swift,milseman/swift,austinzheng/swift,shahmishal/swift,kentya6/swift,jtbandes/swift,xedin/swift,felix91gr/swift,deyton/swift,khizkhiz/swift,cbrentharris/swift,MukeshKumarS/Swift,arvedviehweger/swift,return/swift,tardieu/swift,return/swift,gribozavr/swift,swiftix/swift.old,jmgc/swift,devincoughlin/swift,lorentey/swift,tinysun212/swift-windows,kstaring/swift,adrfer/swift,gribozavr/swift,aschwaighofer/swift,huonw/swift,calebd/swift,allevato/swift,tkremenek/swift,austinzheng/swift,swiftix/swift,amraboelela/swift,mightydeveloper/swift,MukeshKumarS/Swift,harlanhaskins/swift,sschiau/swift,sdulal/swift,sschiau/swift,tardieu/swift,shahmishal/swift,allevato/swift,tinysun212/swift-windows,atrick/swift,jopamer/swift,gmilos/swift,SwiftAndroid/swift,SwiftAndroid/swift,manavgabhawala/swift,dduan/swift,ben-ng/swift,gribozavr/swift,xwu/swift,manavgabhawala/swift,ahoppen/swift,manavgabhawala/swift,xwu/swift,glessard/swift,jckarter/swift,roambotics/swift,MukeshKumarS/Swift,gribozavr/swift,bitjammer/swift,cbrentharris/swift,dduan/swift,cbrentharris/swift,jopamer/swift,kstaring/swift,bitjammer/swift,sschiau/swift,lorentey/swift,shajrawi/swift,therealbnut/swift,MukeshKumarS/Swift,cbrentharris/swift,airspeedswift/swift,natecook1000/swift,CodaFi/swift,natecook1000/swift,shahmishal/swift,deyton/swift,arvedviehweger/swift,austinzheng/swift,roambotics/swift,tkremenek/swift,IngmarStein/swift,russbishop/swift,kentya6/swift,nathawes/swift,harlanhaskins/swift,jtbandes/swift,hughbe/swift,harlanhaskins/swift,jtbandes/swift,sschiau/swift,djwbrown/swift,airspeedswift/swift,hooman/swift,benlangmuir/swift,johnno1962d/swift,arvedviehweger/swift,kperryua/swift,emilstahl/swift,apple/swift,hooman/swift,JGiola/swift,SwiftAndroid/swift,nathawes/swift,felix91gr/swift,natecook1000/swift,parkera/swift,devincoughlin/swift,ahoppen/swift,devincoughlin/swift,khizkhiz/swift,kentya6/swift,gottesmm/swift,djwbrown/swift,OscarSwanros/swift,jopamer/swift,modocache/swift,uasys/swift,austinzheng/swift,harlanhaskins/swift,practicalswift/swift,brentdax/swift,karwa/swift,tinysun212/swift-windows,slavapestov/swift,karwa/swift,devincoughlin/swift,hughbe/swift,adrfer/swift,rudkx/swift,nathawes/swift,kperryua/swift,stephentyrone/swift,parkera/swift,arvedviehweger/swift,ken0nek/swift,kperryua/swift,tjw/swift,gregomni/swift,stephentyrone/swift,dduan/swift,apple/swift,gregomni/swift,LeoShimonaka/swift,glessard/swift,LeoShimonaka/swift,danielmartin/swift,OscarSwanros/swift,OscarSwanros/swift,therealbnut/swift,codestergit/swift,austinzheng/swift,arvedviehweger/swift,shajrawi/swift,alblue/swift,mightydeveloper/swift,mightydeveloper/swift,deyton/swift,slavapestov/swift,gribozavr/swift,JaSpa/swift,djwbrown/swift,zisko/swift,karwa/swift,codestergit/swift,airspeedswift/swift,allevato/swift,amraboelela/swift,arvedviehweger/swift,roambotics/swift,modocache/swift,kusl/swift,natecook1000/swift,IngmarStein/swift,jmgc/swift,ahoppen/swift,calebd/swift,CodaFi/swift,swiftix/swift.old,russbishop/swift,nathawes/swift,felix91gr/swift,uasys/swift,kentya6/swift,frootloops/swift,tjw/swift,jmgc/swift,alblue/swift,alblue/swift,rudkx/swift,devincoughlin/swift,allevato/swift,dduan/swift,tkremenek/swift,jtbandes/swift,manavgabhawala/swift,russbishop/swift,ahoppen/swift,bitjammer/swift,LeoShimonaka/swift,swiftix/swift.old,hooman/swift,kperryua/swift,lorentey/swift,LeoShimonaka/swift,sschiau/swift,Ivacker/swift,allevato/swift,airspeedswift/swift,sdulal/swift,hooman/swift,khizkhiz/swift,gregomni/swift,CodaFi/swift,benlangmuir/swift,xedin/swift,sschiau/swift,cbrentharris/swift,jckarter/swift,frootloops/swift,gottesmm/swift,kusl/swift,frootloops/swift,KrishMunot/swift,kperryua/swift,Ivacker/swift,gmilos/swift,shajrawi/swift,practicalswift/swift,shajrawi/swift,benlangmuir/swift,lorentey/swift,allevato/swift,slavapestov/swift,Jnosh/swift,aschwaighofer/swift,jopamer/swift,swiftix/swift,manavgabhawala/swift,gmilos/swift,SwiftAndroid/swift,codestergit/swift,danielmartin/swift,swiftix/swift,kusl/swift,therealbnut/swift,adrfer/swift,tkremenek/swift,ben-ng/swift,lorentey/swift,gregomni/swift,hughbe/swift,amraboelela/swift,calebd/swift,LeoShimonaka/swift,benlangmuir/swift,roambotics/swift,apple/swift,karwa/swift,alblue/swift,emilstahl/swift,gottesmm/swift,zisko/swift,tinysun212/swift-windows,JGiola/swift,russbishop/swift,jtbandes/swift,jckarter/swift,johnno1962d/swift,huonw/swift,ken0nek/swift,JaSpa/swift,alblue/swift,tkremenek/swift,therealbnut/swift,gottesmm/swift,practicalswift/swift,xedin/swift,swiftix/swift,roambotics/swift,IngmarStein/swift,zisko/swift,atrick/swift,frootloops/swift,IngmarStein/swift,tjw/swift,therealbnut/swift,deyton/swift,sdulal/swift,cbrentharris/swift,parkera/swift,modocache/swift,swiftix/swift,tkremenek/swift,modocache/swift,JGiola/swift,glessard/swift,brentdax/swift,IngmarStein/swift,dduan/swift,khizkhiz/swift,jmgc/swift,kusl/swift,practicalswift/swift,jmgc/swift,danielmartin/swift,jtbandes/swift,shajrawi/swift,xwu/swift,ben-ng/swift,modocache/swift,KrishMunot/swift,IngmarStein/swift,gottesmm/swift,kperryua/swift,hughbe/swift,slavapestov/swift,hughbe/swift,swiftix/swift.old,milseman/swift,kstaring/swift,felix91gr/swift,sdulal/swift,hughbe/swift,codestergit/swift,tinysun212/swift-windows,glessard/swift,SwiftAndroid/swift,danielmartin/swift,rudkx/swift,amraboelela/swift,shajrawi/swift,djwbrown/swift,stephentyrone/swift,OscarSwanros/swift,hooman/swift,therealbnut/swift,MukeshKumarS/Swift,OscarSwanros/swift,emilstahl/swift,aschwaighofer/swift,ken0nek/swift,tjw/swift,brentdax/swift,shahmishal/swift,swiftix/swift.old,emilstahl/swift,emilstahl/swift,kentya6/swift,slavapestov/swift,Jnosh/swift,xwu/swift,swiftix/swift,huonw/swift,huonw/swift,hughbe/swift,atrick/swift,kstaring/swift,aschwaighofer/swift,ken0nek/swift,gregomni/swift,tjw/swift,austinzheng/swift,mightydeveloper/swift,xedin/swift,benlangmuir/swift,deyton/swift,huonw/swift,ahoppen/swift,benlangmuir/swift,ken0nek/swift,kstaring/swift,swiftix/swift,karwa/swift,codestergit/swift,glessard/swift,practicalswift/swift,devincoughlin/swift,milseman/swift,SwiftAndroid/swift,djwbrown/swift,roambotics/swift,gottesmm/swift,stephentyrone/swift,xedin/swift,devincoughlin/swift,kentya6/swift,calebd/swift,tardieu/swift,gmilos/swift,jopamer/swift,zisko/swift,amraboelela/swift,johnno1962d/swift,JaSpa/swift,KrishMunot/swift,jckarter/swift,kperryua/swift,djwbrown/swift,natecook1000/swift,practicalswift/swift,slavapestov/swift,Jnosh/swift,kstaring/swift,felix91gr/swift,apple/swift,Ivacker/swift,ben-ng/swift,ben-ng/swift,jopamer/swift,jckarter/swift,shahmishal/swift,harlanhaskins/swift,SwiftAndroid/swift,calebd/swift,KrishMunot/swift,danielmartin/swift,nathawes/swift,stephentyrone/swift,xedin/swift,KrishMunot/swift,jtbandes/swift,CodaFi/swift,gmilos/swift,russbishop/swift,devincoughlin/swift,milseman/swift,huonw/swift,nathawes/swift,adrfer/swift,johnno1962d/swift,practicalswift/swift,gottesmm/swift,amraboelela/swift,frootloops/swift,karwa/swift,alblue/swift,milseman/swift,huonw/swift,kusl/swift,JaSpa/swift,brentdax/swift,zisko/swift,gribozavr/swift,therealbnut/swift,karwa/swift,brentdax/swift,sdulal/swift,Jnosh/swift,danielmartin/swift,xwu/swift,russbishop/swift,frootloops/swift,JaSpa/swift,calebd/swift,xwu/swift,frootloops/swift,atrick/swift,kusl/swift,natecook1000/swift,MukeshKumarS/Swift,glessard/swift,parkera/swift,CodaFi/swift,kusl/swift,shahmishal/swift,practicalswift/swift,allevato/swift,codestergit/swift,atrick/swift,rudkx/swift,mightydeveloper/swift,adrfer/swift,Jnosh/swift,jckarter/swift,JGiola/swift,adrfer/swift,bitjammer/swift,brentdax/swift,KrishMunot/swift,dreamsxin/swift,tjw/swift,uasys/swift,return/swift,ben-ng/swift,mightydeveloper/swift,emilstahl/swift,felix91gr/swift,xwu/swift,JaSpa/swift,brentdax/swift,bitjammer/swift,manavgabhawala/swift,stephentyrone/swift,lorentey/swift,mightydeveloper/swift,swiftix/swift.old,airspeedswift/swift