Merge pull request #369 from sass/all-repos_autofix_exit-main-2

exit(main()) -> raise SystemExit(main()) pt2

Author: asottile

bin/build-manylinux-wheels

@@ -40,4 +40,4 @@ def main():
 
 
 if __name__ == '__main__':
-    exit(main())
+    raise SystemExit(main())

bin/download-windows-wheels

@@ -56,4 +56,4 @@ def main() -> int:
 
 
 if __name__ == '__main__':
-    exit(main())
+    raise SystemExit(main())