reosurce-loader: use istream_close_unused() instead of istream_close()
reosurce-loader: use istream_close_unused() instead of istream_close()

CM4all/beng-proxy,CM4all/beng-proxy,CM4all/beng-proxy,CM4all/beng-proxy,CM4all/beng-proxy,CM4all/beng-proxy