message: bitmap: fix destructor invocation
diff: @@ -221,10 +221,6 @@ public:
  rhs.Super::_bits = nullptr;
  }
  - ~BitmapBase() {
  - Super::~Super();
  - }
  -
  internal::string to_string(ssize_t bitCount = -1) const {
  if (bitCount == -1)
  bitCount = this->bitCount();
  