Minor changes in the read and write routines.

[[Imported from SVN: r192]]

fem/discretefunction.cc

@@ -240,9 +240,9 @@ namespace Dune
       file << d << " " << r << " ";
       file << n << " " << m << "\n";
       file << myId_ << " " << ftype << "\n";
+      file.close();
     }
 
-    file.close();
     if(ftype == xdr)
       return asImp().write_xdr(filename,timestep);
     if(ftype == ascii)