v0.2.55..v0.2.56 changeset GeneralizeTagMerger.h

diff --git a/hoot-core/src/main/cpp/hoot/core/schema/GeneralizeTagMerger.h b/hoot-core/src/main/cpp/hoot/core/schema/GeneralizeTagMerger.h
index 70a8414..804f16e 100644
--- a/hoot-core/src/main/cpp/hoot/core/schema/GeneralizeTagMerger.h
+++ b/hoot-core/src/main/cpp/hoot/core/schema/GeneralizeTagMerger.h
@@ -38,7 +38,8 @@ public:
 
   static std::string className() { return "hoot::GeneralizeTagMerger"; }
 
-  GeneralizeTagMerger();
+  GeneralizeTagMerger() = default;
+  virtual ~GeneralizeTagMerger() = default;
 
   virtual Tags mergeTags(const Tags& t1, const Tags& t2, ElementType et) const override;