Fix ResourceWarning for an unclosed socket.
test_return_header_keep_alive - Added a cleanup call for the socket.
diff --git a/Lib/test/test_httpservers.py b/Lib/test/test_httpservers.py
index ddb50dc..daf37b2 100644
--- a/Lib/test/test_httpservers.py
+++ b/Lib/test/test_httpservers.py
@@ -182,6 +182,7 @@
res = self.con.getresponse()
self.assertEqual(res.getheader('Connection'), 'keep-alive')
self.con.request('TEST', '/')
+ self.addCleanup(self.con.close)
def test_internal_key_error(self):
self.con.request('KEYERROR', '/')