# HG changeset patch
# User Matt Mackall <mpm@selenic.com>
# Date 1429227008 18000
# Node ID 52628cd73d3e45163b69ed14a7cfbef86b0d9c7d
# Parent  36993b52d01687e98e9bf44e18dbaf836337693f
linkrev: fix issue with annotate of working copy

The introrev was appearing as None in new annotate tests, which the
code from the stable branch wasn't expecting.

diff -r 36993b52d016 -r 52628cd73d3e mercurial/context.py
--- a/mercurial/context.py	Thu Apr 16 17:30:01 2015 -0500
+++ b/mercurial/context.py	Thu Apr 16 18:30:08 2015 -0500
@@ -908,7 +908,7 @@
         introrev = self.introrev()
         if self.rev() != introrev:
             base = self.filectx(self.filenode(), changeid=introrev)
-        if getattr(base, '_ancestrycontext', None) is None:
+        if introrev and getattr(base, '_ancestrycontext', None) is None:
             ac = self._repo.changelog.ancestors([introrev], inclusive=True)
             base._ancestrycontext = ac