public dtor

GUI/Model/Sample/Lattice2DItems.h

@@ -25,9 +25,9 @@ class DoubleDescriptor;
 class Lattice2DItem {
 protected:
     Lattice2DItem();
-    virtual ~Lattice2DItem() = default;
 
 public:
+    virtual ~Lattice2DItem() = default;
     virtual std::unique_ptr<Lattice2D> createLattice() const = 0;
     double unitCellArea() const;