example was trying to add a self edge to an undirected graph,

should have been a directed graph anyways, so I changed it.


[SVN r12087]

libs/graph

@@ -1 +1 @@
-Subproject commit e7c0d34a98d280c247b2af570b6bf6ac422dd9a2
+Subproject commit dcb0dd0aa5f20482784262d145a6d8401f29606f