test__issue58.py: support python 2.5

greentest/test__issue58.py

@@ -15,5 +15,8 @@ server = wsgi.WSGIServer(('', 0), error)
 server.start()
 conn = socket.create_connection(('127.0.0.1', server.server_port))
 conn.sendall('GET / HTTP/1.1\r\nConnection: close\r\n\r\n')
-with gevent.Timeout(0.1):
+timeout = gevent.Timeout.start_new(0.1)
+try:
     conn.makefile(bufsize=1).read()
+finally:
+    timeout.cancel()