Bugfix .each_edge in middle/graph.rs

Edge iterator used the length of the nodes vector, must be a mistake.

Author: blake2-ppc

src/librustc/middle/graph.rs

@@ -187,12 +187,12 @@ impl<N,E> Graph<N,E> {
 
     pub fn each_node(&self, f: &fn(NodeIndex, &Node<N>) -> bool) -> bool {
         //! Iterates over all edges defined in the graph.
-        range(0u, self.nodes.len()).advance(|i| f(NodeIndex(i), &self.nodes[i]))
+        self.nodes.iter().enumerate().advance(|(i, node)| f(NodeIndex(i), node))
     }
 
     pub fn each_edge(&self, f: &fn(EdgeIndex, &Edge<E>) -> bool) -> bool {
-        //! Iterates over all edges defined in the graph.
-        range(0u, self.nodes.len()).advance(|i| f(EdgeIndex(i), &self.edges[i]))
+        //! Iterates over all edges defined in the graph
+        self.edges.iter().enumerate().advance(|(i, edge)| f(EdgeIndex(i), edge))
     }
 
     pub fn each_outgoing_edge(&self,