Fix hgwebdir virtual start-up

mercurial/hgweb.py

@@ -833,7 +833,7 b' class hgwebdir:'
 
         if virtual:
             real = self.cp.get("paths", virtual[1:])
-            h = hgweb.hgweb(real)
+            h = hgweb(real)
             h.run()
             return