v0.2.55..v0.2.56 changeset AddGeometryTypeVisitor.h

diff --git a/hoot-core/src/main/cpp/hoot/core/visitors/AddGeometryTypeVisitor.h b/hoot-core/src/main/cpp/hoot/core/visitors/AddGeometryTypeVisitor.h
index 5dc0017..546900f 100644
--- a/hoot-core/src/main/cpp/hoot/core/visitors/AddGeometryTypeVisitor.h
+++ b/hoot-core/src/main/cpp/hoot/core/visitors/AddGeometryTypeVisitor.h
@@ -38,7 +38,8 @@ public:
 
   static std::string className() { return "hoot::AddGeometryTypeVisitor"; }
 
-  AddGeometryTypeVisitor();
+  AddGeometryTypeVisitor() = default;
+  virtual ~AddGeometryTypeVisitor() = default;
 
   virtual void visit(const std::shared_ptr<Element>& e) override;