v0.2.55..v0.2.56 changeset DuplicateNameRemover.h

diff --git a/hoot-core/src/main/cpp/hoot/core/ops/DuplicateNameRemover.h b/hoot-core/src/main/cpp/hoot/core/ops/DuplicateNameRemover.h
index 92f79c3..2431f7c 100644
--- a/hoot-core/src/main/cpp/hoot/core/ops/DuplicateNameRemover.h
+++ b/hoot-core/src/main/cpp/hoot/core/ops/DuplicateNameRemover.h
@@ -50,6 +50,7 @@ public:
   static std::string className() { return "hoot::DuplicateNameRemover"; }
 
   DuplicateNameRemover();
+  virtual ~DuplicateNameRemover() = default;
 
   void apply(std::shared_ptr<OsmMap>& map);