Merge pull request #368 from sass/all-repos_autofix_systemexit-main

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

Author: asottile

sassc.py

@@ -12,4 +12,4 @@ def main(*args, **kwargs):
 
 
 if __name__ == '__main__':
-    exit(main())
+    raise SystemExit(main())