fix memory leak by using an auto_ptr for the inner solver

[[Imported from SVN: r5548]]

src/targetspacertrsolver.cc

@@ -33,11 +33,11 @@ setup(const AverageDistanceAssembler<TargetSpace>* assembler,
 
     EnergyNorm<MatrixType, CorrectionType>* energyNorm = new EnergyNorm<MatrixType, CorrectionType>(*innerSolverStep);
 
-    innerSolver_ = new ::LoopSolver<CorrectionType>(innerSolverStep,
-                                                    innerIterations,
-                                                    innerTolerance,
-                                                    energyNorm,
-                                                    Solver::QUIET);
+    innerSolver_ = std::auto_ptr< ::LoopSolver<CorrectionType> >(new ::LoopSolver<CorrectionType>(innerSolverStep,
+                                                                                                  innerIterations,
+                                                                                                  innerTolerance,
+                                                                                                  energyNorm,
+                                                                                                  Solver::QUIET));
 
     // //////////////////////////////////////////////////////////
     //   Create obstacles

src/targetspacertrsolver.hh

@@ -71,7 +71,7 @@ protected:
     const AverageDistanceAssembler<TargetSpace>* assembler_;
 
     /** \brief The solver for the quadratic inner problems */
-    ::LoopSolver<CorrectionType>* innerSolver_;
+    std::auto_ptr< ::LoopSolver<CorrectionType> > innerSolver_;
 
 //     /** \brief Dummy field for the trustregiongsstep */
 //     Dune::BitSetVector<blocksize> dummyObstacle_;