Don't introduce a conditional cast from AnyObject to AnyObject.
Don't introduce a conditional cast from AnyObject to AnyObject.

Fixes <rdar://problem/15246190>.

Swift SVN r11874

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