v0.2.55..v0.2.56 changeset NamedOp.h

diff --git a/hoot-core/src/main/cpp/hoot/core/ops/NamedOp.h b/hoot-core/src/main/cpp/hoot/core/ops/NamedOp.h
index a532fe5..7899696 100644
--- a/hoot-core/src/main/cpp/hoot/core/ops/NamedOp.h
+++ b/hoot-core/src/main/cpp/hoot/core/ops/NamedOp.h
@@ -51,6 +51,7 @@ public:
 
   NamedOp();
   NamedOp(QStringList namedOps);
+  virtual ~NamedOp() = default;
 
   virtual void apply(std::shared_ptr<OsmMap>& map) override;