Handle windows read err as Disconnect.

door/input_windows.go

@@ -48,6 +48,7 @@ func Reader(handle syscall.Handle) {
 		err := syscall.WSARecv(handle, &WSA_Buffer, 1, &read, &flags, nil, nil)
 		if err != nil {
 			log.Printf("Reader ERR: %#v\n", err)
+			close(readerChannel)
 			break
 		}