fix alignment issue in ikstack
fix alignment issue in ikstack

tst-ikstack
=================

ikstack bug, addr 0x100357b4 should be a multiply of 8
FAIL tst-ikstack (exit status: 1)

Signed-off-by: Alon Bar-Lev <bb308b7fcc6eb1364576b94f9dfcd9006c6c579d@gmail.com>

holme-r/iksemel,holme-r/iksemel,holme-r/iksemel,holme-r/iksemel