VALID_NICK
if (!VALID_NICK(nick))
if (VALID_NICK(nick)) {
if (!VALID_NICK(nick)) {
if (!VALID_NICK(treeroot))
if (!VALID_NICK(trillhdr->th_ingressnick))
if (!VALID_NICK(adjnick) || ingressnick == adjnick ||
if (!VALID_NICK(trillhdr->th_egressnick) ||
!VALID_NICK(trillhdr->th_ingressnick)) {
if (egress_nick != RBRIDGE_NICKNAME_NONE && !VALID_NICK(egress_nick))
if (!VALID_NICK(ournick))
if (!VALID_NICK(dtnick)) {