Fix missing code in 'Installing C++ distribution of Pytorch' (#39237)
Summary:
Fix https://github.com/pytorch/pytorch/issues/39236
- Before:
- After:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/39237
Differential Revision: D21818392
Pulled By: ezyang
fbshipit-source-id: d7e51de83ec84276e88cbf168bf9e7f57200ff46
