Make destructors virtual

include/laser_scan_utils/loop_closure_base.h

@@ -54,7 +54,7 @@ class LoopClosureBase2d
 
     /** \brief Destructor
      **/
-    ~LoopClosureBase2d(){};
+    virtual ~LoopClosureBase2d(){};
 
     /** \brief update the scene struct with keypoints and descriptors
      **/

include/laser_scan_utils/loop_closure_falko.h

@@ -148,7 +148,7 @@ class LoopClosureFalko : public LoopClosureBase2d, public falkolib::FALKOExtract
 
     /** \brief Destructor
      **/
-    ~LoopClosureFalko() {}
+    virtual ~LoopClosureFalko() {}
 
     /** \brief Create and update the scene struct with keypoints and descriptors
      **/