message: route_replies: rizon: Add 403, 442 expectations
  Rizon replies with a 403 if the channel does not exist,
  and with a 442 if you're not on that channel.
  Resolves
diff: @@ -171,6 +171,8 @@ static const struct {
  // MODE e
  {"348", false},
  {"349", true},
  + {"403", true}, /* rfc1459 ERR_NOSUCHCHANNEL */
  + {"442", true}, /* rfc1459 ERR_NOTONCHANNEL */
  {"467", true}, /* rfc1459 ERR_KEYSET */
  {"472", true}, /* rfc1459 ERR_UNKNOWNMODE */
  {"501", true}, /* rfc1459 ERR_UMODEUNKNOWNFLAG */
  