v0.2.55..v0.2.56 changeset MapCleaner.h

diff --git a/hoot-core/src/main/cpp/hoot/core/ops/MapCleaner.h b/hoot-core/src/main/cpp/hoot/core/ops/MapCleaner.h
index 0c64ced..9e21373 100644
--- a/hoot-core/src/main/cpp/hoot/core/ops/MapCleaner.h
+++ b/hoot-core/src/main/cpp/hoot/core/ops/MapCleaner.h
@@ -50,10 +50,9 @@ public:
 
   static QString opsKey() { return "map.cleaner.transforms"; }
 
-  MapCleaner();
-  MapCleaner(const Progress& progress);
-
-  virtual ~MapCleaner() {}
+  MapCleaner() = default;
+  MapCleaner(const Progress& progress) : _progress(progress) { }
+  virtual ~MapCleaner() = default;
 
   virtual void apply(std::shared_ptr<OsmMap>& map) override;