diff -r 5222a3c470ed -r 6aa6fcaeaea5 lemon/list_graph.h
--- a/lemon/list_graph.h	Tue Jul 22 11:29:57 2008 +0000
+++ b/lemon/list_graph.h	Fri Sep 19 15:14:41 2008 +0000
@@ -118,7 +118,7 @@
       int n;
       for(n = first_node; 
 	  n!=-1 && nodes[n].first_in == -1; 
-	  n = nodes[n].next);
+	  n = nodes[n].next) { }
       e.id = (n == -1) ? -1 : nodes[n].first_in;
     }
 
@@ -128,8 +128,8 @@
       } else {
 	int n;
 	for(n = nodes[edges[edge.id].target].next;
-	  n!=-1 && nodes[n].first_in == -1; 
-	  n = nodes[n].next);
+	    n!=-1 && nodes[n].first_in == -1; 
+	    n = nodes[n].next) { }
 	edge.id = (n == -1) ? -1 : nodes[n].first_in;
       }      
     }