Prevent infinite loop while annotating and an unknown type is encountered.

[jamie-pate]

            try:
                types = try_get_types(dereference)

        if is_array and arraydecl is None:
            types['member'] = types['json']
            types['json'] = 'json_type_array'
        return (types, arraydecl)
    except ExpansionError as err:
        # try again in case it's an array
        if not is_array:
            dereference -= 1
            is_array = True
            if initial_err is None:
                initial_err = err
                initial_tb = sys.exc_info()[2]

-                raise err