v0.2.55..v0.2.56 changeset HighwayMatchCreator.cpp

diff --git a/hoot-core/src/main/cpp/hoot/core/conflate/highway/HighwayMatchCreator.cpp b/hoot-core/src/main/cpp/hoot/core/conflate/highway/HighwayMatchCreator.cpp
index a47cc18..2760445 100644
--- a/hoot-core/src/main/cpp/hoot/core/conflate/highway/HighwayMatchCreator.cpp
+++ b/hoot-core/src/main/cpp/hoot/core/conflate/highway/HighwayMatchCreator.cpp
@@ -118,7 +118,7 @@ public:
     _memoryCheckUpdateInterval = opts.getMemoryUsageCheckerInterval();
   }
 
-  ~HighwayMatchVisitor()
+  virtual ~HighwayMatchVisitor()
   {
     LOG_TRACE("neighbor counts, max: " << _neighborCountMax << " mean: " <<
               (double)_neighborCountSum / (double)_elementsEvaluated);