When we print types in the AST printer if for some reason we cannot find the
appropriate type to print or if the user explicitly asks, we fall back and use a
type repr instead.
This behavior causes a problem due to the implementation of sending results
using a sending type repr to communicate that the relevant function has a
sending result, but we actually do not use the sending type repr from that point
on. So as a result, in this fallback case, we put in one too many sending on the
result.
rdar://135594964
