[PATCH 1/3] Fix up some sess_workspace leftovers

[Tollef Fog Heen]

Thanks, the whole series has been applied.

(The first patch needed some hand-holding due to a bug in
git-send-email, I think (it failed to apply the second chunk due to the
function prototype changing and then got thoroughly confused.  It also
needed a small adjustment for some changes in git master, but no worries
about that.)

Thanks and sorry for the delay in getting this applied!
-- 
Tollef Fog Heen
Technical lead, Varnish Software
t: +47 21 98 92 64