Shut up compiler about unused the_type. (#18278)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/18278
ghimport-source-id: 3c35f6e7229c3c2b3a27d96370d7c05fad58365e
Stack from [ghstack](https://github.com/ezyang/ghstack):
* **#18278 Shut up compiler about unused this_type.**
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
Differential Revision: D14563050
fbshipit-source-id: 4b516f6c9ef3784d1430f793f304066c351b1a93
