[Typechecker] Ensure both base and derived generic contexts are not null before calling getOverrideGenericSignature()
[Typechecker] Ensure both base and derived generic contexts are not null before calling getOverrideGenericSignature()

jckarter/swift,gribozavr/swift,jmgc/swift,parkera/swift,harlanhaskins/swift,rudkx/swift,lorentey/swift,apple/swift,gregomni/swift,ahoppen/swift,parkera/swift,harlanhaskins/swift,aschwaighofer/swift,glessard/swift,parkera/swift,rudkx/swift,glessard/swift,JGiola/swift,gribozavr/swift,xwu/swift,benlangmuir/swift,sschiau/swift,xwu/swift,karwa/swift,parkera/swift,xwu/swift,jckarter/swift,gregomni/swift,aschwaighofer/swift,sschiau/swift,apple/swift,lorentey/swift,apple/swift,JGiola/swift,shahmishal/swift,tkremenek/swift,lorentey/swift,hooman/swift,parkera/swift,atrick/swift,lorentey/swift,karwa/swift,harlanhaskins/swift,JGiola/swift,atrick/swift,stephentyrone/swift,benlangmuir/swift,parkera/swift,hooman/swift,roambotics/swift,nathawes/swift,lorentey/swift,gregomni/swift,xwu/swift,nathawes/swift,harlanhaskins/swift,sschiau/swift,jckarter/swift,jckarter/swift,stephentyrone/swift,JGiola/swift,glessard/swift,gregomni/swift,hooman/swift,apple/swift,karwa/swift,gribozavr/swift,nathawes/swift,hooman/swift,karwa/swift,stephentyrone/swift,allevato/swift,ahoppen/swift,airspeedswift/swift,CodaFi/swift,xwu/swift,nathawes/swift,shahmishal/swift,devincoughlin/swift,gregomni/swift,devincoughlin/swift,roambotics/swift,JGiola/swift,harlanhaskins/swift,atrick/swift,rudkx/swift,shahmishal/swift,sschiau/swift,gribozavr/swift,jmgc/swift,gribozavr/swift,airspeedswift/swift,devincoughlin/swift,atrick/swift,shahmishal/swift,roambotics/swift,tkremenek/swift,shahmishal/swift,stephentyrone/swift,apple/swift,ahoppen/swift,airspeedswift/swift,CodaFi/swift,rudkx/swift,parkera/swift,lorentey/swift,CodaFi/swift,tkremenek/swift,stephentyrone/swift,rudkx/swift,devincoughlin/swift,airspeedswift/swift,airspeedswift/swift,xwu/swift,aschwaighofer/swift,allevato/swift,shahmishal/swift,jmgc/swift,harlanhaskins/swift,nathawes/swift,tkremenek/swift,roambotics/swift,allevato/swift,karwa/swift,jmgc/swift,aschwaighofer/swift,devincoughlin/swift,sschiau/swift,glessard/swift,allevato/swift,jmgc/swift,jmgc/swift,benlangmuir/swift,devincoughlin/swift,lorentey/swift,hooman/swift,CodaFi/swift,karwa/swift,nathawes/swift,CodaFi/swift,CodaFi/swift,sschiau/swift,gribozavr/swift,shahmishal/swift,hooman/swift,glessard/swift,jckarter/swift,airspeedswift/swift,ahoppen/swift,roambotics/swift,sschiau/swift,lorentey/swift,roambotics/swift,benlangmuir/swift,gregomni/swift,gribozavr/swift,apple/swift,stephentyrone/swift,devincoughlin/swift,nathawes/swift,allevato/swift,aschwaighofer/swift,CodaFi/swift,atrick/swift,rudkx/swift,sschiau/swift,stephentyrone/swift,jckarter/swift,tkremenek/swift,aschwaighofer/swift,jckarter/swift,karwa/swift,glessard/swift,jmgc/swift,gribozavr/swift,allevato/swift,shahmishal/swift,harlanhaskins/swift,devincoughlin/swift,hooman/swift,karwa/swift,tkremenek/swift,ahoppen/swift,ahoppen/swift,benlangmuir/swift,parkera/swift,tkremenek/swift,allevato/swift,xwu/swift,aschwaighofer/swift,JGiola/swift,atrick/swift,benlangmuir/swift,airspeedswift/swift