simplify some code by getting rid of some bool results, and computing their result at the top level.  No functionality change.
simplify some code by getting rid of some bool results,
and computing their result at the top level.  No functionality
change.


Swift SVN r9517

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