move the check into chan_in to be extra paranoid
move the check into chan_in to be extra paranoid

telehash/telehash-c,ukscone/telehash-c,telehash/telehash-c,ukscone/telehash-c,ukscone/telehash-c,ukscone/telehash-c,telehash/telehash-c,telehash/telehash-c