pytorch

cb67d946 - [PT-D] Fix `send`, `recv` return type (#92152)

[PT-D] Fix `send`, `recv` return type (#92152) - `send` returns `None`. - `recv` returns the sender rank if valid or -1 otherwise. Pull Request resolved: https://github.com/pytorch/pytorch/pull/92152 Approved by: https://github.com/wz337