[sheepdog] [PATCH V2 1/2] sheep: simplify client_decref() and move it into free_request() and add a helper function

[Liu Yuan]

On 07/06/2012 06:24 PM, Yunkai Zhang wrote:
>> Is a double unregister-event fine?  It seems like we don't protect
>> > against that here.
> I think it's no harm, unregister_event will call lookup_event() to check it.
> 

Better assign fd = -1 in unregister_event() and then we can check it
before unregister it. lookup_event() will printf a error message which
will bewilder people who look at the log.