make the ast dumper handle null conditions without crashing. NFC.
make the ast dumper handle null conditions without crashing. NFC.


Swift SVN r26032

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