Make compile

[[Imported from SVN: r12094]]

dune/solvers/norms/sumnorm.hh

@@ -24,7 +24,7 @@ class SumNorm: public Norm<V>
         //! Compute the norm of the given vector
         field_type operator()(const VectorType &f) const
         {
-            return std::sqrt(this->SumNorm<OperatorType,VectorType>::normSquared(f));
+            return std::sqrt(normSquared(f));
         }
 
         //! Compute the square of the norm of the given vector