AST: Small cleanup for getMemberSubstitutions(), NFC
AST: Small cleanup for getMemberSubstitutions(), NFC

rudkx/swift,tjw/swift,milseman/swift,huonw/swift,gottesmm/swift,huonw/swift,gmilos/swift,deyton/swift,parkera/swift,stephentyrone/swift,xedin/swift,JGiola/swift,therealbnut/swift,huonw/swift,airspeedswift/swift,Jnosh/swift,jopamer/swift,codestergit/swift,austinzheng/swift,hughbe/swift,codestergit/swift,lorentey/swift,lorentey/swift,therealbnut/swift,manavgabhawala/swift,shajrawi/swift,therealbnut/swift,parkera/swift,glessard/swift,xwu/swift,CodaFi/swift,deyton/swift,huonw/swift,jmgc/swift,xwu/swift,nathawes/swift,milseman/swift,IngmarStein/swift,djwbrown/swift,sschiau/swift,gregomni/swift,alblue/swift,gregomni/swift,JGiola/swift,gribozavr/swift,rudkx/swift,rudkx/swift,modocache/swift,lorentey/swift,bitjammer/swift,natecook1000/swift,xwu/swift,swiftix/swift,swiftix/swift,tkremenek/swift,huonw/swift,arvedviehweger/swift,kperryua/swift,hooman/swift,hooman/swift,lorentey/swift,harlanhaskins/swift,IngmarStein/swift,jtbandes/swift,swiftix/swift,modocache/swift,return/swift,hughbe/swift,Jnosh/swift,amraboelela/swift,jtbandes/swift,huonw/swift,atrick/swift,practicalswift/swift,shajrawi/swift,JaSpa/swift,practicalswift/swift,sschiau/swift,brentdax/swift,JGiola/swift,danielmartin/swift,parkera/swift,glessard/swift,lorentey/swift,therealbnut/swift,zisko/swift,frootloops/swift,codestergit/swift,roambotics/swift,amraboelela/swift,jopamer/swift,shajrawi/swift,parkera/swift,arvedviehweger/swift,modocache/swift,ahoppen/swift,roambotics/swift,modocache/swift,rudkx/swift,allevato/swift,allevato/swift,practicalswift/swift,modocache/swift,benlangmuir/swift,CodaFi/swift,felix91gr/swift,jopamer/swift,lorentey/swift,shahmishal/swift,JaSpa/swift,austinzheng/swift,devincoughlin/swift,IngmarStein/swift,gmilos/swift,gregomni/swift,arvedviehweger/swift,devincoughlin/swift,brentdax/swift,alblue/swift,airspeedswift/swift,aschwaighofer/swift,JGiola/swift,glessard/swift,amraboelela/swift,JGiola/swift,brentdax/swift,nathawes/swift,deyton/swift,glessard/swift,apple/swift,xwu/swift,IngmarStein/swift,shahmishal/swift,apple/swift,kperryua/swift,parkera/swift,amraboelela/swift,ahoppen/swift,tardieu/swift,austinzheng/swift,allevato/swift,tjw/swift,arvedviehweger/swift,danielmartin/swift,return/swift,shajrawi/swift,JaSpa/swift,tardieu/swift,frootloops/swift,calebd/swift,felix91gr/swift,ahoppen/swift,tardieu/swift,tkremenek/swift,devincoughlin/swift,shahmishal/swift,Jnosh/swift,IngmarStein/swift,rudkx/swift,hooman/swift,zisko/swift,jmgc/swift,jckarter/swift,allevato/swift,arvedviehweger/swift,djwbrown/swift,practicalswift/swift,nathawes/swift,arvedviehweger/swift,apple/swift,ahoppen/swift,gribozavr/swift,aschwaighofer/swift,glessard/swift,atrick/swift,manavgabhawala/swift,natecook1000/swift,lorentey/swift,kstaring/swift,practicalswift/swift,tjw/swift,jckarter/swift,gottesmm/swift,stephentyrone/swift,tjw/swift,tinysun212/swift-windows,gribozavr/swift,bitjammer/swift,jtbandes/swift,stephentyrone/swift,calebd/swift,xwu/swift,zisko/swift,shahmishal/swift,brentdax/swift,JaSpa/swift,tkremenek/swift,gottesmm/swift,practicalswift/swift,return/swift,natecook1000/swift,allevato/swift,huonw/swift,jtbandes/swift,tinysun212/swift-windows,kstaring/swift,jmgc/swift,djwbrown/swift,lorentey/swift,xwu/swift,natecook1000/swift,gmilos/swift,ben-ng/swift,Jnosh/swift,atrick/swift,manavgabhawala/swift,bitjammer/swift,roambotics/swift,modocache/swift,atrick/swift,gottesmm/swift,kperryua/swift,codestergit/swift,apple/swift,shahmishal/swift,gmilos/swift,nathawes/swift,gottesmm/swift,hooman/swift,gmilos/swift,deyton/swift,gribozavr/swift,calebd/swift,uasys/swift,gottesmm/swift,gribozavr/swift,shajrawi/swift,OscarSwanros/swift,calebd/swift,codestergit/swift,gribozavr/swift,kperryua/swift,djwbrown/swift,xedin/swift,felix91gr/swift,xedin/swift,IngmarStein/swift,hughbe/swift,apple/swift,tinysun212/swift-windows,xwu/swift,bitjammer/swift,uasys/swift,shahmishal/swift,glessard/swift,allevato/swift,tkremenek/swift,OscarSwanros/swift,return/swift,bitjammer/swift,benlangmuir/swift,kperryua/swift,arvedviehweger/swift,milseman/swift,sschiau/swift,stephentyrone/swift,devincoughlin/swift,harlanhaskins/swift,frootloops/swift,karwa/swift,milseman/swift,jopamer/swift,gmilos/swift,karwa/swift,CodaFi/swift,uasys/swift,kstaring/swift,codestergit/swift,karwa/swift,jopamer/swift,jmgc/swift,roambotics/swift,rudkx/swift,uasys/swift,alblue/swift,alblue/swift,devincoughlin/swift,danielmartin/swift,felix91gr/swift,jckarter/swift,ben-ng/swift,allevato/swift,airspeedswift/swift,tinysun212/swift-windows,CodaFi/swift,return/swift,bitjammer/swift,return/swift,frootloops/swift,brentdax/swift,ben-ng/swift,kperryua/swift,apple/swift,benlangmuir/swift,natecook1000/swift,sschiau/swift,ben-ng/swift,nathawes/swift,shajrawi/swift,tjw/swift,xedin/swift,felix91gr/swift,therealbnut/swift,tardieu/swift,benlangmuir/swift,uasys/swift,jmgc/swift,hooman/swift,milseman/swift,deyton/swift,stephentyrone/swift,airspeedswift/swift,calebd/swift,tinysun212/swift-windows,karwa/swift,alblue/swift,OscarSwanros/swift,bitjammer/swif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