[Constraint solver] Only add defaultable types on the actual type variable.
[Constraint solver] Only add defaultable types on the actual type variable.

When adding a defaultable type, make sure that the type being
defaulted is actually the type variable.

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