builtin-mailinfo.c: check error status from rewind and ftruncate

[git/spearce.git] / t / t4013 / diff.diff-tree_-c_--stat_--summary_side

$ git diff-tree -c --stat --summary side
c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 dir/sub |    2 ++
 file0   |    3 +++
 file3   |    4 ++++
 3 files changed, 9 insertions(+), 0 deletions(-)
 create mode 100644 file3
$