DDP Communication hook: (Patch) Fix the way we pass future result to buckets. (#43734)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/43734
Following the additional GH comments on the original PR https://github.com/pytorch/pytorch/pull/43307.
ghstack-source-id: 111327130
Test Plan: Run `python test/distributed/test_c10d.py`
Reviewed By: smessmer
Differential Revision: D23380288
fbshipit-source-id: 4b8889341c57b3701f0efa4edbe1d7bbc2a82ced
