sctp_first_chunk
if ((ich = sctp_first_chunk((uchar_t *)(sctph + 1), mlen)) == NULL) {
extern sctp_chunk_hdr_t *sctp_first_chunk(uchar_t *, ssize_t);
return (sctp_first_chunk((uchar_t *)ch, *remaining));
if ((ch = sctp_first_chunk((uchar_t *)(sctph + 1), mlen)) == NULL) {
ch = sctp_first_chunk((uchar_t *)(sctph + 1), mlen);