Add missing default cases
Add missing default cases

See, this is why it’s good that Ceylon enforces exhaustive switches. I
had no idea that I’d missed some kinds of declarations here. (Namely,
call signatures and index signatures.)

(I’m sure I was aware back when I wrote the two existing cases, but I
was too lazy to add a warning for the default case, or even a TODO…)

lucaswerkmeister/ctsl