Fix a test for SpooledTemporaryFile (added in issue #10355).
diff --git a/Lib/test/test_tempfile.py b/Lib/test/test_tempfile.py
index 7d6923c..a90cd0e 100644
--- a/Lib/test/test_tempfile.py
+++ b/Lib/test/test_tempfile.py
@@ -854,7 +854,7 @@
         self.assertTrue(f._rolled)
         self.assertEqual(f.mode, 'w+')
         self.assertIsNotNone(f.name)
-        self.assertEqual(f.newlines, '\n')
+        self.assertEqual(f.newlines, os.linesep)
         self.assertIsNotNone(f.encoding)
 
     def test_text_newline_and_encoding(self):