v0.2.55..v0.2.56 changeset MapComparator.cpp

diff --git a/hoot-core/src/main/cpp/hoot/core/scoring/MapComparator.cpp b/hoot-core/src/main/cpp/hoot/core/scoring/MapComparator.cpp
index cbf146a..8ea737f 100644
--- a/hoot-core/src/main/cpp/hoot/core/scoring/MapComparator.cpp
+++ b/hoot-core/src/main/cpp/hoot/core/scoring/MapComparator.cpp
@@ -95,6 +95,7 @@ public:
       _errorLimit(errorLimit)
   {
   }
+  virtual ~CompareVisitor() = default;
 
   bool isMatch() { return _matches; }