fix race condition in destroyed uTP socket that was waiting for the underlying udp socket to become writable
fix race condition in destroyed uTP socket that was waiting for the underlying udp socket to become writable

aindigo/rasterbar_libtorrent,aindigo/rasterbar_libtorrent,aindigo/rasterbar_libtorrent,aindigo/rasterbar_libtorrent,aindigo/rasterbar_libtorrent,aindigo/rasterbar_libtorrent