[cuda/mapping] Added default Constructor to Mapping type

cuda/include/rtac_base/cuda/Mapping.h

@@ -93,6 +93,7 @@ class Mapping
     Texture  data_;
     FunctorT f_;
     
+    Mapping();
     Mapping(Texture&& data);
     Mapping(Texture&& data, const FunctorT& f);
 
@@ -114,6 +115,10 @@ class Mapping
     DeviceMap device_map() const;
 };
 
+template <typename T, class FunctorT>
+Mapping<T,FunctorT>::Mapping()
+{}
+
 template <typename T, class FunctorT>
 Mapping<T,FunctorT>::Mapping(Texture&& data) :
     data_(data)