Rev 2254: Fix tests. in http://people.samba.org/bzr/jelmer/bzr-svn/0.5

[Jelmer Vernooij]

At http://people.samba.org/bzr/jelmer/bzr-svn/0.5

------------------------------------------------------------
revno: 2254
revision-id: jelmer at samba.org-20081208205749-wzpyacjhxoz3hta4
parent: jelmer at samba.org-20081208204820-1iv08johco067nur
committer: Jelmer Vernooij <jelmer at samba.org>
branch nick: 0.5
timestamp: Mon 2008-12-08 21:57:49 +0100
message:
  Fix tests.
modified:
  commit.py                      commit.py-20060607190346-qvq128wgfubhhgm2-1
=== modified file 'commit.py'
--- a/commit.py	2008-12-08 20:48:20 +0000
+++ b/commit.py	2008-12-08 20:57:49 +0000
@@ -905,7 +905,7 @@
     """
     assert rev.revision_id in (None, revision_id)
     old_tree = source_repo.revision_tree(revision_id)
-    base_tree = source_repo.revision_tree(rev.parent_ids[0])
+    base_tree = source_repo.revision_tree(rev.parent_ids[0] if rev.parent_ids else NULL_REVISION)
 
     if push_metadata:
         base_revids = rev.parent_ids