generically implement the getSol() method

[[Imported from SVN: r7375]]

dune/solvers/iterationsteps/lineariterationstep.hh

@@ -38,7 +38,10 @@ public:
     virtual void iterate() = 0;
     
     //! Return solution object
-    virtual VectorType getSol() = 0;
+    virtual VectorType getSol()
+    {
+        return *(this->x_);
+    }
     
     //! Return linear operator
     virtual const MatrixType* getMatrix() {return mat_.get();}