[MERGE] Fix test_plan_file_merge

[Martin Pool]

On Thu, Jun 12, 2008 at 1:26 PM, Robert Collins
<robertc at robertcollins.net> wrote:
> This trivial patch fixes a failing test in the versionedfiles branch.
> Supplied as an incremental tweak for review sanity.

bb: approve

Maybe it would be better to avoid unnecessary copying but it may not
be significant, and premature optimization etc.

-- 
Martin <http://launchpad.net/~mbp/>