C1: LoopInvariantCodeMotion constructor can leave some fields uninitialized

SonarCloud instance reports the following problem:
  3 uninitialized fields at the end of the constructor call

class LoopInvariantCodeMotion : public StackObj {
 private:
  GlobalValueNumbering* _gvn;
  ShortLoopOptimizer* _short_loop_optimizer;
  Instruction* _insertion_point; // <---- left uninitialized after shortcut
  ValueStack * _state; // <---- left uninitialized after shortcut
  bool _insert_is_pred; // <---- left uninitialized after shortcut

LoopInvariantCodeMotion::LoopInvariantCodeMotion(ShortLoopOptimizer *slo, GlobalValueNumbering* gvn, BlockBegin* loop_header, BlockList* loop_blocks)
  : _gvn(gvn), _short_loop_optimizer(slo) {
 ...
  BlockBegin* insertion_block = loop_header->dominator();
  if (insertion_block->number_of_preds() == 0) {
    return; // <--- shortcut from constructor
  }