hgweb: drop recursivity in _navseq

This is totally not needed.

mercurial/hgweb/webutil.py

@@ -29,11 +29,11 b' def _navseq(factor, limit=None):'
         yield limit
         if limit >= 20 and limit <= 40:
             yield 50
-    else:
+        factor *= 10
+    while True:
         yield 1 * factor
         yield 3 * factor
-    for f in _navseq(factor * 10):
-        yield f
+        factor *= 10
 
 def revnavgen(pos, pagelen, limit, nodefunc):
     """computes label and revision id for navigation link