diff -r d886e4b131e6 -r c7ee2a2a3cff lemon/bellman_ford.h
--- a/lemon/bellman_ford.h	Tue May 09 09:23:39 2006 +0000
+++ b/lemon/bellman_ford.h	Tue May 09 11:25:34 2006 +0000
@@ -326,13 +326,13 @@
     BellmanFord(const Graph& _graph, const LengthMap& _length) :
       graph(&_graph), length(&_length),
       _pred(0), local_pred(false),
-      _dist(0), local_dist(false) {}
+      _dist(0), local_dist(false), _mask(0) {}
     
     ///Destructor.
     ~BellmanFord() {
       if(local_pred) delete _pred;
       if(local_dist) delete _dist;
-      delete _mask;
+      if(_mask) delete _mask;
     }
 
     /// \brief Sets the length map.