v0.2.55..v0.2.56 changeset ElementConsumer.h

diff --git a/hoot-core/src/main/cpp/hoot/core/elements/ElementConsumer.h b/hoot-core/src/main/cpp/hoot/core/elements/ElementConsumer.h
index 75f7a6c..2ff9d84 100644
--- a/hoot-core/src/main/cpp/hoot/core/elements/ElementConsumer.h
+++ b/hoot-core/src/main/cpp/hoot/core/elements/ElementConsumer.h
@@ -22,7 +22,7 @@
  * This will properly maintain the copyright information. DigitalGlobe
  * copyrights will be updated automatically.
  *
- * @copyright Copyright (C) 2015, 2018, 2019 DigitalGlobe (http://www.digitalglobe.com/)
+ * @copyright Copyright (C) 2015, 2018, 2019, 2020 DigitalGlobe (http://www.digitalglobe.com/)
  */
 #ifndef ELEMENTCONSUMER_H
 #define ELEMENTCONSUMER_H
@@ -36,6 +36,9 @@ class ElementConsumer
 {
 public:
 
+  ElementConsumer() = default;
+  virtual ~ElementConsumer() = default;
+
   virtual void addElement(const ElementPtr& e) = 0;
 };