discovery: fix a typo in a comment
The idea here is that the code is imperfect, not that it is impossible to get
something behaving properly.
--- a/mercurial/discovery.py Fri Oct 09 14:59:37 2015 -0700
+++ b/mercurial/discovery.py Fri Oct 09 15:37:05 2015 -0700
@@ -309,7 +309,7 @@
# remove future heads which are actually obsoleted by another
# pushed element:
#
- # XXX as above, There are several cases this case does not handle
+ # XXX as above, There are several cases this code does not handle
# XXX properly
#
# (1) if <nh> is public, it won't be affected by obsolete marker