combine-diff.c: use error_errno()

[git/git-svn.git] / t / t4013 / diff.diff-tree_--pretty_--root_--stat_initial

$ git diff-tree --pretty --root --stat initial
commit 444ac553ac7612cc88969031b02b3767fb8a353a
Author: A U Thor <author@example.com>
Date:   Mon Jun 26 00:00:00 2006 +0000

    Initial

 dir/sub | 2 ++
 file0   | 3 +++
 file2   | 3 +++
 3 files changed, 8 insertions(+)
$