message: Use std::size_t for role_idx and counter in consume_food
diff: @@ -316,9 +316,9 @@ int Population::consume_food(int food)
  for (int i = 0; i < population_to_kill; /**/ )
  {
  - int role_idx = i % 5;
  + std::size_t role_idx = i % 5;
  - int counter = 0;
  + std::size_t counter = 0;
  for (;;)
  {
  role_idx = role_idx + counter;
  