Restore default values on premature test exit (#22115)
Summary:
Previously any assert failures would leave the updated setting, making
the test suite semantics dependent on the order in which the tests are run.
The diff is large only due to the indentation change (might be good to review without whitespace changes).
cc yf225
Pull Request resolved: https://github.com/pytorch/pytorch/pull/22115
Differential Revision: D15960875
Pulled By: soumith
fbshipit-source-id: 9313695277fc2d968786f13371719e03fff18519
