Lwt_daemon: close pipe's write end.
Lwt_daemon: close pipe's write end.

ocsigen/lwt,ocsigen/lwt,rneswold/lwt,rneswold/lwt,rgrinberg/lwt,c-cube/lwt,mirage/lwt,c-cube/lwt,c-cube/lwt,ocsigen/lwt,rgrinberg/lwt,gfxmonk/lwt,rneswold/lwt,mfp/lwt,fdopen/lwt,fdopen/lwt,mfp/lwt,gfxmonk/lwt,mirage/lwt,rgrinberg/lwt,rgrinberg/lwt