Update partner_limit after each solve
Update partner_limit after each solve

We missed an update before this, due to the infeasible hack for detecting a
breach of the partner_limit. This makes those such off-by-one errors harder to
make.

WPettersson/moip_aira,WPettersson/moip_aira,WPettersson/moip_aira,WPettersson/moip_aira