o Code simplification and refactoring:
    - Remove the return value for fascist_firewall_choose_address_base(),
      and sister functions such as fascist_firewall_choose_address_node()
      and fascist_firewall_choose_address_rs(). Also, while we're here,
      initialize the ap argument as leaving it uninitialized can pose a
      security hazard. Closes ticket 24734. Patch by Neel Chauhan.