v0.2.55..v0.2.56 changeset MarkForReviewMergerCreator.h

diff --git a/hoot-core/src/main/cpp/hoot/core/conflate/merging/MarkForReviewMergerCreator.h b/hoot-core/src/main/cpp/hoot/core/conflate/merging/MarkForReviewMergerCreator.h
index 4648e36..094bb9e 100644
--- a/hoot-core/src/main/cpp/hoot/core/conflate/merging/MarkForReviewMergerCreator.h
+++ b/hoot-core/src/main/cpp/hoot/core/conflate/merging/MarkForReviewMergerCreator.h
@@ -39,7 +39,8 @@ public:
 
   static std::string className() { return "hoot::MarkForReviewMergerCreator"; }
 
-  MarkForReviewMergerCreator();
+  MarkForReviewMergerCreator() = default;
+  virtual ~MarkForReviewMergerCreator() = default;
 
   virtual bool createMergers(const MatchSet& matches, std::vector<MergerPtr>& mergers) const override;