Don't mix expected and unexpected batch sizes when releasing unexp slots
Don't mix expected and unexpected batch sizes when releasing unexp slots

The default values were identical, so we didn't see any bug because
of these typos.

ananos/open-mx,ananos/open-mx,ananos/xen2mx,ananos/xen2mx,ananos/xen2mx,ananos/open-mx,ananos/xen2mx