--- a/mercurial/httprepo.py	Sun Oct 31 18:29:55 2010 +0100
+++ b/mercurial/httprepo.py	Thu Oct 13 04:27:49 2011 +0200
@@ -28,6 +28,7 @@
         self.path = path
         self.caps = None
         self.handler = None
+        self.urlopener = None
         u = util.url(path)
         if u.query or u.fragment:
             raise util.Abort(_('unsupported URL component: "%s"') %
@@ -42,9 +43,10 @@
         self.urlopener = url.opener(ui, authinfo)
 
     def __del__(self):
-        for h in self.urlopener.handlers:
-            h.close()
-            getattr(h, "close_all", lambda : None)()
+        if self.urlopener:
+            for h in self.urlopener.handlers:
+                h.close()
+                getattr(h, "close_all", lambda : None)()
 
     def url(self):
         return self.path