[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

src/_pytest/tmpdir.py

@@ -161,6 +161,7 @@ def get_user() -> Optional[str]:
     try:
         # In some exotic environments, getpass may not be importable.
         import getpass
+
         return getpass.getuser()
     except (ImportError, KeyError):
         return None