v0.2.55..v0.2.56 changeset MultiaryPoiHashVisitor.h

diff --git a/hoot-rnd/src/main/cpp/hoot/rnd/visitors/MultiaryPoiHashVisitor.h b/hoot-rnd/src/main/cpp/hoot/rnd/visitors/MultiaryPoiHashVisitor.h
index fa26604..1a1ac74 100644
--- a/hoot-rnd/src/main/cpp/hoot/rnd/visitors/MultiaryPoiHashVisitor.h
+++ b/hoot-rnd/src/main/cpp/hoot/rnd/visitors/MultiaryPoiHashVisitor.h
@@ -43,7 +43,8 @@ public:
 
   static std::string className() { return "hoot::MultiaryPoiHashVisitor"; }
 
-  MultiaryPoiHashVisitor();
+  MultiaryPoiHashVisitor() = default;
+  virtual ~MultiaryPoiHashVisitor() = default;
 
   virtual std::string getClassName() const { return className(); }