replace exit(main()) with raise SystemExit(main())

Committed via https://github.com/asottile/all-repos

Author: asottile

future_fstrings.py

@@ -294,4 +294,4 @@ def main(argv=None):
 
 
 if __name__ == '__main__':
-    exit(main())
+    raise SystemExit(main())

testing/fix_coverage.py

@@ -29,4 +29,4 @@ def main():
 
 
 if __name__ == '__main__':
-    exit(main())
+    raise SystemExit(main())

testing/remove_pycdir.py

@@ -9,4 +9,4 @@ def main():
 
 
 if __name__ == '__main__':
-    exit(main())
+    raise SystemExit(main())