[stdlib] fixed incorrect deinitialization in Dictionary
[stdlib] fixed incorrect deinitialization in Dictionary

Dictionary could be double freed after bridging to ObjC due to a call to
takeRetainedValue(), causing a segfault. This was fixed by removing the
free call, as it was unnecessary.

Fixes rdar://problem/18544533

Swift SVN r24208

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