[PATCH 3 of 8] obsolete: replace 'ctx._repo' with 'ctx.repo()'

[Matt Harbison]

# HG changeset patch
# User Matt Harbison <matt_harbison at yahoo.com>
# Date 1426215925 14400
#      Thu Mar 12 23:05:25 2015 -0400
# Node ID 09b680b458a5e3aeea370c645fbf0c58d198e6d1
# Parent  9b07d79ac62ee43530af3eadabea22e74309cebe
obsolete: replace 'ctx._repo' with 'ctx.repo()'

diff --git a/mercurial/obsolete.py b/mercurial/obsolete.py
--- a/mercurial/obsolete.py
+++ b/mercurial/obsolete.py
@@ -762,13 +762,13 @@
 
 def precursormarkers(ctx):
     """obsolete marker marking this changeset as a successors"""
-    for data in ctx._repo.obsstore.precursors.get(ctx.node(), ()):
-        yield marker(ctx._repo, data)
+    for data in ctx.repo().obsstore.precursors.get(ctx.node(), ()):
+        yield marker(ctx.repo(), data)
 
 def successormarkers(ctx):
     """obsolete marker making this changeset obsolete"""
-    for data in ctx._repo.obsstore.successors.get(ctx.node(), ()):
-        yield marker(ctx._repo, data)
+    for data in ctx.repo().obsstore.successors.get(ctx.node(), ()):
+        yield marker(ctx.repo(), data)
 
 def allsuccessors(obsstore, nodes, ignoreflags=0):
     """Yield node for every successor of <nodes>.