message: freelist: add TODO
diff: @@ -56,6 +56,7 @@ public:
  // off == maxCount means 'empty'
  _off = _maxCount;
  + // TODO: iterate over the bitmap?
  for (size_t i = 0; i < _maxCount; i++) {
  // if we were passed in a bitmap and the current object is
  // already allocated, don't add its offset to the freelist
  