message: Use vectorized operations when repositioning ComboBox
diff: @@ -79,10 +79,10 @@ void ComboBox::resizedHandler(Control* /*control*/)
  void ComboBox::repositioned(float, float)
  {
  txtField.position(position());
  - btnDown.position({positionX() + width() - btnDown.width(), positionY()});
  - lstItems.position({positionX(), positionY() + height()});
  + btnDown.position(position() + NAS2D::Vector<float>{width() - btnDown.width(), 0});
  + lstItems.position(position() + NAS2D::Vector<float>{0, height()});
  - mBaseArea = {positionX(), positionY(), width(), btnDown.height()};
  + mBaseArea = Rectangle<float>::Create(position(), NAS2D::Vector{width(), btnDown.height()});
  }
  