Calling getSol for the linear solver is obligatory

[[Imported from SVN: r6488]]

dune/tnnmg/iterationsteps/tnnmgstep.hh

@@ -108,7 +108,7 @@ class TruncatedNonsmoothNewtonMultigrid : public IterationStep<typename TNNMGPro
                 linearIterationStep_->preprocess();
                 for(int i=0; i<linearIterationSteps_; ++i)
                     linearIterationStep_->iterate();
-                v = linearIterationStep_->getSol(); // Ist das notwendig ?????????????????????
+                v = linearIterationStep_->getSol();
             }
 
             // project correction