Skip blocklist logic when opts.blocklist is not set
Skip blocklist logic when opts.blocklist is not set

Fixes #862

yciabaud/webtorrent,jamesliu96/webtorrent,yciabaud/webtorrent,webtorrent/webtorrent,jamesliu96/webtorrent,joshterrill/webtorrent,feross/webtorrent,webtorrent/webtorrent,feross/webtorrent,joshterrill/webtorrent