v0.2.55..v0.2.56 changeset MultiaryHierarchicalClusterAlgorithm.h

diff --git a/hoot-rnd/src/main/cpp/hoot/rnd/conflate/multiary/MultiaryHierarchicalClusterAlgorithm.h b/hoot-rnd/src/main/cpp/hoot/rnd/conflate/multiary/MultiaryHierarchicalClusterAlgorithm.h
index a246190..18111c3 100644
--- a/hoot-rnd/src/main/cpp/hoot/rnd/conflate/multiary/MultiaryHierarchicalClusterAlgorithm.h
+++ b/hoot-rnd/src/main/cpp/hoot/rnd/conflate/multiary/MultiaryHierarchicalClusterAlgorithm.h
@@ -22,7 +22,7 @@
  * This will properly maintain the copyright information. DigitalGlobe
  * copyrights will be updated automatically.
  *
- * @copyright Copyright (C) 2017, 2018, 2019 DigitalGlobe (http://www.digitalglobe.com/)
+ * @copyright Copyright (C) 2017, 2018, 2019, 2020 DigitalGlobe (http://www.digitalglobe.com/)
  */
 #ifndef MULTIARYHIERARCHICALCLUSTERALGORITHM_H
 #define MULTIARYHIERARCHICALCLUSTERALGORITHM_H
@@ -44,6 +44,9 @@ namespace hoot
 class MultiaryHierarchicalClusterAlgorithm : public MultiaryClusterAlgorithm
 {
 public:
+
+  virtual ~MultiaryHierarchicalClusterAlgorithm() = default;
+
   /**
    * Constructor.
    * @param mergeCache Cache to use when merging elements.