Merge branch 'jc/maint-fmt-merge-msg-no-edit-lose-credit'

Stop spending cycles to compute information to be placed on
commented lines in "merge --no-edit", which will be discarded
anyway.

* jc/maint-fmt-merge-msg-no-edit-lose-credit:
  merge --no-edit: do not credit people involved in the side branch

builtin/merge.c

@@ -1222,6 +1222,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 			memset(&opts, 0, sizeof(opts));
 			opts.add_title = !have_message;
 			opts.shortlog_len = shortlog_len;
+			opts.credit_people = (0 < option_edit);
 
 			fmt_merge_msg(&merge_names, &merge_msg, &opts);
 			if (merge_msg.len)