message: Use new delegate Button constructor in StructureInspector
diff: @@ -16,14 +16,13 @@ using namespace NAS2D;
  StructureInspector::StructureInspector() :
  Window{constants::WINDOW_STRUCTURE_INSPECTOR},
  - btnClose{"Close"},
  + btnClose{"Close", {this, &StructureInspector::onClose}},
  mIcons{imageCache.load("ui/icons.png")}
  {
  size({ 350, 240 });
  btnClose.size({ 50, 20 });
  add(btnClose, { rect().width - btnClose.rect().width - 5, rect().height - btnClose.rect().height - 5, });
  - btnClose.click().connect(this, &StructureInspector::onClose);
  }
  