Issue #13895: fix test_ssl hanging under Ubuntu

Lib/test/test_ssl.py

@@ -1198,7 +1198,7 @@ else:
                                     chatty=chatty,
                                     connectionchatty=False)
         with server:
-            s = client_context.wrap_socket(socket.socket())
+            with client_context.wrap_socket(socket.socket()) as s:
                 s.connect((HOST, server.port))
                 for arg in [indata, bytearray(indata), memoryview(indata)]:
                     if connectionchatty: