[PATCH 5 of 5 more-in-stack] readbundle: map 'HG10UN' to None compression

[Pierre-Yves David]

# HG changeset patch
# User Pierre-Yves David <pierre-yves.david at fb.com>
# Date 1442016416 25200
#      Fri Sep 11 17:06:56 2015 -0700
# Node ID 53cbea54e9ed42f147b5d83dd7efeda3cb2fe2cb
# Parent  c337ca94e665c36bdf3eb5053d061148cbf333b2
readbundle: map 'HG10UN' to None compression

In line with the other previous changes

diff --git a/mercurial/changegroup.py b/mercurial/changegroup.py
--- a/mercurial/changegroup.py
+++ b/mercurial/changegroup.py
@@ -78,15 +78,15 @@ def combineresults(results):
     elif changedheads < 0:
         result = -1 + changedheads
     return result
 
 bundletypes = {
-    "": ("", 'UN'),       # only when using unbundle on ssh and old http servers
+    "": ("", 'None'),     # only when using unbundle on ssh and old http servers
                           # since the unification ssh accepts a header but there
                           # is no capability signaling it.
     "HG20": (), # special-cased below
-    "HG10UN": ("HG10UN", 'UN'),
+    "HG10UN": ("HG10UN", None),
     "HG10BZ": ("HG10", 'BZ'),
     "HG10GZ": ("HG10GZ", 'GZ'),
 }
 
 # hgweb uses this list to communicate its preferred type