Fix a Release mode warning of unused variable.
Fix a Release mode warning of unused variable.

Swift SVN r26657

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