Skip outputting scalar_checks if they are false. (#29866)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/29866
This is a no-op anyway, so no reason to output.
Test Plan: Imported from OSS
Differential Revision: D18521742
Pulled By: gchanan
fbshipit-source-id: f695e453beeee609dbdf23d26f9b5eaf519e16b2
