v0.2.55..v0.2.56 changeset EdgeDistanceExtractor.h

diff --git a/hoot-core/src/main/cpp/hoot/core/algorithms/extractors/EdgeDistanceExtractor.h b/hoot-core/src/main/cpp/hoot/core/algorithms/extractors/EdgeDistanceExtractor.h
index d9b589f..7e48b1c 100644
--- a/hoot-core/src/main/cpp/hoot/core/algorithms/extractors/EdgeDistanceExtractor.h
+++ b/hoot-core/src/main/cpp/hoot/core/algorithms/extractors/EdgeDistanceExtractor.h
@@ -53,6 +53,7 @@ public:
 
   EdgeDistanceExtractor(ValueAggregatorPtr, Meters spacing = 5.0);
   EdgeDistanceExtractor(Meters spacing = 5.0);
+  virtual ~EdgeDistanceExtractor() = default;
 
   static std::string className() { return "hoot::EdgeDistanceExtractor"; }