format-patch: use the diff options for the cover letter, too

diff --git a/builtin-log.c b/builtin-log.c
index bbadbc0de2fe1a2c85f3488420172a4db2ab6b4a..fd9b3ae95ea8da03780f93382dd817a11cdbb9f3 100644 (file)
--- a/builtin-log.c
+++ b/builtin-log.c
@@ -694,8 +694,8 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout,
        if (!origin)
                return;
 
-       diff_setup(&opts);
-       opts.output_format |= DIFF_FORMAT_SUMMARY | DIFF_FORMAT_DIFFSTAT;
+       memcpy(&opts, &rev->diffopt, sizeof(opts));
+       opts.output_format = DIFF_FORMAT_SUMMARY | DIFF_FORMAT_DIFFSTAT;
 
        diff_setup_done(&opts);