v0.2.55..v0.2.56 changeset AngleHistogramExtractor.h

diff --git a/hoot-core/src/main/cpp/hoot/core/algorithms/extractors/AngleHistogramExtractor.h b/hoot-core/src/main/cpp/hoot/core/algorithms/extractors/AngleHistogramExtractor.h
index 4cafdee..6431ff8 100644
--- a/hoot-core/src/main/cpp/hoot/core/algorithms/extractors/AngleHistogramExtractor.h
+++ b/hoot-core/src/main/cpp/hoot/core/algorithms/extractors/AngleHistogramExtractor.h
@@ -55,6 +55,7 @@ public:
 
   AngleHistogramExtractor();
   AngleHistogramExtractor(Radians smoothing, unsigned int bins = 16);
+  virtual ~AngleHistogramExtractor() = default;
 
   static std::string className() { return "hoot::AngleHistogramExtractor"; }