fix #115: Socket.py _dummy gets unexpected Timeout arg

gevent/socket.py

@@ -264,7 +264,7 @@ else:
 class _closedsocket(object):
     __slots__ = []
 
-    def _dummy(*args):
+    def _dummy(*args, **kwargs):
         raise error(EBADF, 'Bad file descriptor')
     # All _delegate_methods must also be initialized here.
     send = recv = recv_into = sendto = recvfrom = recvfrom_into = _dummy