v0.2.55..v0.2.56 changeset ElementComparison.h

diff --git a/hoot-core/src/main/cpp/hoot/core/elements/ElementComparison.h b/hoot-core/src/main/cpp/hoot/core/elements/ElementComparison.h
index 9335c6c..8e12491 100644
--- a/hoot-core/src/main/cpp/hoot/core/elements/ElementComparison.h
+++ b/hoot-core/src/main/cpp/hoot/core/elements/ElementComparison.h
@@ -44,9 +44,10 @@ class ElementComparison
 {
 public:
 
-  ElementComparison();
+  ElementComparison() = default;
   ElementComparison(ElementPtr element, const OsmMap& sourceMap,
                     const bool ignoreElementId = false);
+  virtual ~ElementComparison() = default;
 
   ElementPtr getElement() const { return _element; }