diff -r 8ff65f7e3273 -r a87c41f65aff mercurial/util.py
--- a/mercurial/util.py	Tue May 26 22:09:39 2009 +0200
+++ b/mercurial/util.py	Tue May 26 22:37:26 2009 +0200
@@ -512,7 +512,7 @@
                                 (path, prefix))
         parts.pop()
         prefixes = []
-        for n in range(len(parts)):
+        while parts:
             prefix = os.sep.join(parts)
             if prefix in self.auditeddir:
                 break