The NetBSD headers use internal indirect type for
standard *int*_t definitions. The internal type is unrolled
inside the sanitizer into e.g. __int32_t from int32_t.
This symbol mangling causes pattern mismatch in
the interger truncation tests as they expect exact
types such as 'int32_t'.
Change the pattern rules so every acceptable internal
form of *int*_t will be accepted flawlessly.