added assert in torrent::state_updated() to make sure it's not called from the constructor
added assert in torrent::state_updated() to make sure it's not called from the constructor

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