libutils: Add UNEXPECTED_NULL status_t

We use this specifically in situations where we expect to read
an object from a Parcel, but fail because the object is null.

Bug: 25617251

(cherry picked from commit c3441e69c06f21a7f7cc5582f99849da0507d744)

Change-Id: I07e50c21ce979484f9a472de490b0bfded37a896
1 file changed