fix related to the recent piece_picker optimization
fix related to the recent piece_picker optimization

TeoTwawki/libtorrent,hamedramzi/libtorrent,snowyu/libtorrent,snowyu/libtorrent,hamedramzi/libtorrent,TeoTwawki/libtorrent,TeoTwawki/libtorrent,snowyu/libtorrent,TeoTwawki/libtorrent,hamedramzi/libtorrent,snowyu/libtorrent,TeoTwawki/libtorrent,hamedramzi/libtorrent,hamedramzi/libtorrent,TeoTwawki/libtorrent,snowyu/libtorrent,snowyu/libtorrent,hamedramzi/libtorrent