v0.2.55..v0.2.56 changeset GeometryTypeCriterion.h

diff --git a/hoot-core/src/main/cpp/hoot/core/criterion/GeometryTypeCriterion.h b/hoot-core/src/main/cpp/hoot/core/criterion/GeometryTypeCriterion.h
index df21529..3ec3fea 100644
--- a/hoot-core/src/main/cpp/hoot/core/criterion/GeometryTypeCriterion.h
+++ b/hoot-core/src/main/cpp/hoot/core/criterion/GeometryTypeCriterion.h
@@ -53,7 +53,8 @@ public:
 
   static std::string className() { return "hoot::GeometryTypeCriterion"; }
 
-  virtual ~GeometryTypeCriterion() {}
+  GeometryTypeCriterion() = default;
+  virtual ~GeometryTypeCriterion() = default;
 
   virtual GeometryType getGeometryType() const = 0;