Remove one more optional-as-boolean.
Remove one more optional-as-boolean.

Swift SVN r20640

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