minor changes.

[[Imported from SVN: r1288]]

grid/bsgrid/bsgrid.cc

@@ -51,7 +51,7 @@ namespace Dune {
     for(int l=0; l<MAXL; l++)
       for(int i=0; i<dim+1; i++) size_[l][i] = -1;
 
-    for(int i=0; i<dim+1; i++) globalSize_[i] = -1;
+    for(int i=0; i<dim+1; i++) globalSize_[i] = 0;
   }
 #endif