When advancing Tx ring index (txq->wqe_ci) in txq_scatter_v(), the title
descriptor of multi-packet send isn't taken into account if it doesn't
cross 64B boundary.
Fixes: 6cb559d67b83 ("net/mlx5: add vectorized Rx/Tx burst for x86")
Signed-off-by: Yongseok Koh <redacted>
Acked-by: Nelio Laranjeiro <redacted>