message: Fix selection of civs collapsed to make room for a new civ by impact
diff: @@ -26,7 +26,7 @@ def checkAvailableSlots():
  def freeSlotFor(iCiv):
  iCivImpact = getImpact(iCiv)
  - availableSlots = players.major().alive().where(lambda p: infos.civ(iCiv).getImpact() <= iCivImpact)
  + availableSlots = players.major().alive().where(lambda p: getImpact(civ(p)) <= iCivImpact)
  metric = lambda iPlayer: (getImpact(civ(iPlayer)), until(year(dFall[iPlayer])))
  iSlot = availableSlots.where(lambda p: stability(p) == iStabilityCollapsing).minimum(metric)
  