[cleanup][warnings] Remove warnings.

dune/alugrid/3d/entity_imp.cc

@@ -472,8 +472,9 @@ namespace Dune {
             // get hedge1 corresponding to dune reference element and return number
             return item_->myhedge( ElemTopo::dune2aluEdge(i) )->getIndex();
           }
-          else if (GridImp::dimension == 2)
+          else // if (GridImp::dimension == 2)
           {
+            assert( GridImp::dimension == 2 );
             if (GridImp:: elementType == tetra)
             {
               // We want vertices 1,2,3 in DUNE numbering for tetra and 0,1,2,3 for hexa

dune/alugrid/test/test-dgf.cc

@@ -33,11 +33,12 @@ try
     return 0;
   }
 
-  using ALU3dSimplex = Dune::ALUGrid<3, 3, Dune::simplex, Dune::conforming>;
-  Dune::GridPtr< ALU3dSimplex > gridPtr( filename );
-
+  using GridType = Dune::ALUGrid<3, 3, Dune::simplex, Dune::conforming>;
+  Dune::GridPtr< GridType > gridPtr( filename );
   gridPtr.loadBalance();
 
+  // grid is ready and load balanced at that point
+
   std::cout << "P[ " << rank << " ] parameters = " << gridPtr.nofParameters( 0 ) << std::endl;
   auto lvlView = gridPtr->levelGridView( 0 );
   const auto end = lvlView.end< 0 > ();