v0.2.55..v0.2.56 changeset AddExportTagsVisitor.h

diff --git a/hoot-core/src/main/cpp/hoot/core/visitors/AddExportTagsVisitor.h b/hoot-core/src/main/cpp/hoot/core/visitors/AddExportTagsVisitor.h
index cc33f01..eb18b5d 100644
--- a/hoot-core/src/main/cpp/hoot/core/visitors/AddExportTagsVisitor.h
+++ b/hoot-core/src/main/cpp/hoot/core/visitors/AddExportTagsVisitor.h
@@ -46,6 +46,7 @@ class AddExportTagsVisitor : public ElementVisitor
 public:
 
   AddExportTagsVisitor();
+  virtual ~AddExportTagsVisitor() = default;
 
   static std::string className() { return "hoot::AddExportTagsVisitor"; }