记录一下gen.erl超时的地方

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本记得删除了。幸好有 服务器备份，招起来挺麻烦的。?

236 wait_resp_mon(Node, Mref, Timeout) ->237     receive238         {Mref, Reply} ->239             erlang:demonitor(Mref, [flush]),240             {ok, Reply};241         {'DOWN', Mref, _, _, noconnection} ->242             exit({nodedown, Node});243         {'DOWN', Mref, _, _, Reason} ->244             exit(Reason)245     after Timeout ->246             erlang:demonitor(Mref),247             receive248                 {'DOWN', Mref, _, _, _} -> true249             after 0 -> true250             end,251             exit(timeoutmon)252     end.253 254 wait_resp(Node, Tag, Timeout) ->255     receive256         {Tag, Reply} ->257             monitor_node(Node, false),258             {ok, Reply};259         {nodedown, Node} ->260             monitor_node(Node, false),261             exit({nodedown, Node})262     after Timeout ->263             monitor_node(Node, false),264             exit(timeoutresp)265     end.266 267 %%268 %% Send a reply to the client.269 %%