v0.2.55..v0.2.56 changeset AddUuidVisitor.h

diff --git a/hoot-core/src/main/cpp/hoot/core/visitors/AddUuidVisitor.h b/hoot-core/src/main/cpp/hoot/core/visitors/AddUuidVisitor.h
index 3bf0ef7..b7e17c0 100644
--- a/hoot-core/src/main/cpp/hoot/core/visitors/AddUuidVisitor.h
+++ b/hoot-core/src/main/cpp/hoot/core/visitors/AddUuidVisitor.h
@@ -44,8 +44,9 @@ public:
 
   static std::string className() { return "hoot::AddUuidVisitor"; }
 
-  AddUuidVisitor();
+  AddUuidVisitor() = default;
   AddUuidVisitor(QString key);
+  virtual ~AddUuidVisitor() = default;
 
   /**
    * Adds a tag with a UUID to all valid elements.