Typically, pointer types are formatted in a way where the identifier
comes right after the type definition without a space separating them,
e.g. `int *foo`, where the type is `int *` and the identifier is `foo`.
However, if a type alias to a pointer type is used, the emitted
declaration fragments are incorrect due to the missing space between the
type and identifier, like in the below example:
```
typedef int *T;
// The declaration fragment contains `Tbar` instead of `T bar`
void foo(T bar);
```
This patch checks if pointer types are aliased, and inserts the space
correctly if so.
rdar://132022003
794218bc53