Defined LeafIterator in BSGrid.

[[Imported from SVN: r1734]]

grid/bsgrid.hh

@@ -934,7 +934,7 @@ namespace Dune
     typedef typename Traits::LeafIterator LeafIteratorType;
     //typedef BSGridReferenceGeometry<dim> ReferenceGeometry;
 
-    //typedef BSSPACE ObjectStream ObjectStreamType;
+    typedef BSSPACE ObjectStream ObjectStreamType;
 
     //typedef typename std::pair < ObjectStreamType * , BSGridEntity<0,dim,dimworld> * >
     //              DataCollectorParamType;
@@ -942,6 +942,8 @@ namespace Dune
     typedef BSGridHierarchicIndexSet<dim,dimworld> HierarchicIndexSetType;
     typedef DefaultLevelIndexSet<MyType>           LevelIndexSetType;
 
+    typedef typename Traits::LeafIterator LeafIterator;
+
     /** \todo Please doc me! */
 
     //! maximal number of levels