Tolerate unwritable socket when trying to send the disconnection message
Tolerate unwritable socket when trying to send the disconnection message

Fixes #1552

Somasis/kakoune,lenormf/kakoune,occivink/kakoune,jkonecny12/kakoune,alexherbo2/kakoune,casimir/kakoune,jkonecny12/kakoune,mawww/kakoune,jjthrash/kakoune,Somasis/kakoune,alexherbo2/kakoune,occivink/kakoune,mawww/kakoune,danr/kakoune,Somasis/kakoune,jkonecny12/kakoune,mawww/kakoune,danr/kakoune,Somasis/kakoune,lenormf/kakoune,danr/kakoune,jkonecny12/kakoune,alexherbo2/kakoune,occivink/kakoune,mawww/kakoune,casimir/kakoune,lenormf/kakoune,danr/kakoune,jjthrash/kakoune,occivink/kakoune,alexherbo2/kakoune,casimir/kakoune,lenormf/kakoune,jjthrash/kakoune,casimir/kakoune,jjthrash/kakoune