sshbuf_get_u16
ASSERT_INT_EQ(sshbuf_get_u16(p1, &v16), 0);
ASSERT_INT_EQ(sshbuf_get_u16(p1, &v16), 0);
ASSERT_INT_EQ(sshbuf_get_u16(p1, &v16), 0);
ASSERT_INT_EQ(sshbuf_get_u16(p1, &v16), 0);
r = sshbuf_get_u16(p1, &v16);
ASSERT_INT_EQ(sshbuf_get_u16(p1, &u16), 0);
(r = sshbuf_get_u16(b, &dest_port)) != 0 ||
(r = sshbuf_get_u16(b, &dest_port)) != 0) {
int sshbuf_get_u16(struct sshbuf *buf, uint16_t *valp);