Return type of method 'energy' is not ctype anymore

[[Imported from SVN: r12667]]

dune/elasticity/materials/geomexactstvenantkirchhoffmaterial.hh

@@ -69,7 +69,7 @@ public:
     //! Evaluate the strain energy
     ReturnType energy(const GridFunction& displace)
     {
-        ctype energy=0;
+        ReturnType energy=0;
         const GridType& grid = this->basis_->getGridView().grid();
 
         ElementIterator eIt = grid.template leafbegin<0>();