Small clean-up in closure specializer.
Small clean-up in closure specializer.

Swift SVN r21561

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