v0.2.55..v0.2.56 changeset ExactTagDifferencer.h

diff --git a/hoot-core/src/main/cpp/hoot/core/schema/ExactTagDifferencer.h b/hoot-core/src/main/cpp/hoot/core/schema/ExactTagDifferencer.h
index 15cb5ee..1515795 100644
--- a/hoot-core/src/main/cpp/hoot/core/schema/ExactTagDifferencer.h
+++ b/hoot-core/src/main/cpp/hoot/core/schema/ExactTagDifferencer.h
@@ -22,7 +22,7 @@
  * This will properly maintain the copyright information. DigitalGlobe
  * copyrights will be updated automatically.
  *
- * @copyright Copyright (C) 2015, 2017, 2018, 2019 DigitalGlobe (http://www.digitalglobe.com/)
+ * @copyright Copyright (C) 2015, 2017, 2018, 2019, 2020 DigitalGlobe (http://www.digitalglobe.com/)
  */
 #ifndef EXACTTAGDIFFERENCER_H
 #define EXACTTAGDIFFERENCER_H
@@ -42,6 +42,9 @@ public:
 
   static std::string className() { return "hoot::ExactTagDifferencer"; }
 
+  ExactTagDifferencer() = default;
+  virtual ~ExactTagDifferencer() = default;
+
   virtual double diff(const ConstOsmMapPtr& map, const ConstElementPtr& e1,
     const ConstElementPtr& e2) const override;
 };