message: Initialise distance in SizeNode.
diff: @@ -929,6 +929,12 @@ public:
  do_verify_column(m_condition_column);
  }
  + void init() override
  + {
  + ParentNode::init();
  + m_dD = 10.0;
  + }
  +
  size_t find_first_local(size_t start, size_t end) override
  {
  for (size_t s = start; s < end; ++s) {
  