diff -r ba89c3872801 -r 6ac206fb6f27 mercurial/obsolete.py
--- a/mercurial/obsolete.py	Thu Aug 15 21:35:56 2013 -0400
+++ b/mercurial/obsolete.py	Thu Aug 15 21:36:53 2013 -0400
@@ -496,9 +496,6 @@
     for its live spawn. Code that makes multiple calls to `successorssets`
     *must* use this cache mechanism or suffer terrible performances."""
 
-    if isinstance(initialnode, int):
-        initialnode = repo.unfiltered().changelog.node(initialnode)
-
     succmarkers = repo.obsstore.successors
 
     # Stack of nodes we search successors sets for