fixed possible problem with errors occuring and reported to dht_tracker::on_receive.
fixed possible problem with errors occuring and reported to dht_tracker::on_receive.


deluge-clone/libtorrent,deluge-clone/libtorrent,deluge-clone/libtorrent,deluge-clone/libtorrent,deluge-clone/libtorrent,deluge-clone/libtorrent