v0.2.55..v0.2.56 changeset CleanCmd.cpp

diff --git a/hoot-core/src/main/cpp/hoot/core/cmd/CleanCmd.cpp b/hoot-core/src/main/cpp/hoot/core/cmd/CleanCmd.cpp
index 1fdc69c..a14910c 100644
--- a/hoot-core/src/main/cpp/hoot/core/cmd/CleanCmd.cpp
+++ b/hoot-core/src/main/cpp/hoot/core/cmd/CleanCmd.cpp
@@ -53,7 +53,7 @@ public:
 
   static string className() { return "hoot::CleanCmd"; }
 
-  CleanCmd() { }
+  CleanCmd() = default;
 
   virtual QString getName() const override { return "clean"; }