Nathan Shively-Sanders 10beac2c1c Delay instantiation of signature return type
`getReturnTypeOfSignature` correctly handles an un-instantiated
signature, but `instantiateSignature` used to eagerly instantiate the
return type. This caused an infinite recursion in #16233.

Now `instantiateSignature` doesn't instantiate the return type, but
relies on `getReturnTypeOfSignature` to do it.
2017-06-07 12:58:36 -07:00
..
2017-06-06 14:58:18 -07:00
2017-06-04 14:26:18 -07:00