Bugfix: Don't error trying to write to peer-closed sockets
Bugfix: Don't error trying to write to peer-closed sockets

imsaguy/eloipool,uingei/eloi,jameshilliard/4tar-eloipool,cinnamoncoin/eloipool-1,svasva/eloipool,wizkid057/eloipool,ahmedbodi/SHA-Eloipool-MMCFE-,thrasher-/eloipool,pointgaming/point-gaming-btc,uingei/eloipool,thrasher-/eloipool,thrasher-/eloipool