message: Simplify food return value in the case of starvation
  When people are starving, all food is being consumed.
  The previous value was a constant derived directly from food. Rather
  than undo that calculation, just return food.
diff: @@ -192,7 +192,7 @@ int Population::consumeFood(int food)
  mDeathCount += populationToKill;
  // actual amount of food used for the fed part of the population.
  - return PopulationFed / 10;
  + return food;
  }
  