Fix test_ssl.test_refcycle()

Issue #26590: support.check_warnings() stores warnins, but ResourceWarning now
comes with a reference to the socket object which indirectly keeps the socket
alive.
diff --git a/Lib/test/test_ssl.py b/Lib/test/test_ssl.py
index 9a48483..e0c31a8 100644
--- a/Lib/test/test_ssl.py
+++ b/Lib/test/test_ssl.py
@@ -328,7 +328,7 @@
         wr = weakref.ref(ss)
         with support.check_warnings(("", ResourceWarning)):
             del ss
-            self.assertEqual(wr(), None)
+        self.assertEqual(wr(), None)
 
     def test_wrapped_unconnected(self):
         # Methods on an unconnected SSLSocket propagate the original