v0.2.55..v0.2.56 changeset MultiaryClusterAlgorithm.h

diff --git a/hoot-rnd/src/main/cpp/hoot/rnd/conflate/multiary/MultiaryClusterAlgorithm.h b/hoot-rnd/src/main/cpp/hoot/rnd/conflate/multiary/MultiaryClusterAlgorithm.h
index 387aebe..4b19720 100644
--- a/hoot-rnd/src/main/cpp/hoot/rnd/conflate/multiary/MultiaryClusterAlgorithm.h
+++ b/hoot-rnd/src/main/cpp/hoot/rnd/conflate/multiary/MultiaryClusterAlgorithm.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 MULTIARYCLUSTERALGORITHM_H
 #define MULTIARYCLUSTERALGORITHM_H
@@ -130,6 +130,7 @@ public:
     }
   };
 
+  virtual ~MultiaryClusterAlgorithm() = default;
   /**
    * @param mergeCache The cache to use when merging POIs. This abstracts the actual merge operation
    *  away from the clustering algorithm.