Add missing 'else' to guard statements.
Add missing 'else' to guard statements.

Fixes <rdar://84895831>.

ahoppen/swift,benlangmuir/swift,atrick/swift,JGiola/swift,glessard/swift,gregomni/swift,benlangmuir/swift,benlangmuir/swift,glessard/swift,atrick/swift,JGiola/swift,benlangmuir/swift,atrick/swift,apple/swift,glessard/swift,JGiola/swift,roambotics/swift,gregomni/swift,ahoppen/swift,roambotics/swift,benlangmuir/swift,JGiola/swift,rudkx/swift,gregomni/swift,atrick/swift,apple/swift,ahoppen/swift,rudkx/swift,atrick/swift,JGiola/swift,roambotics/swift,benlangmuir/swift,apple/swift,roambotics/swift,gregomni/swift,apple/swift,glessard/swift,gregomni/swift,glessard/swift,glessard/swift,apple/swift,rudkx/swift,ahoppen/swift,ahoppen/swift,roambotics/swift,ahoppen/swift,roambotics/swift,atrick/swift,apple/swift,rudkx/swift,JGiola/swift,rudkx/swift,gregomni/swift,rudkx/swift