Fix the include header for PRId64 (#1745)
Fix the include header for PRId64 (#1745)

Summary:
This diff fixed the error in [Linux nightlies
](https://app.circleci.com/pipelines/github/facebookresearch/faiss/1325/workflows/e3c09d68-9fbe-4215-a3df-f901a1a5c08e/jobs/4245)

Pull Request resolved: https://github.com/facebookresearch/faiss/pull/1745

Reviewed By: mdouze

Differential Revision: D26870628

Pulled By: beauby

fbshipit-source-id: fd2f5e66fff478565e59a6590dafdb50d4280b25

facebookresearch/faiss,facebookresearch/faiss,facebookresearch/faiss,facebookresearch/faiss