Bug? section_fileinfo() in Linux Agent ignores directories

Troubleshooting
1

Hi

I have tried to monitor the size of a subdirectory using fileinfo and realized that the perl program inside the check_mk_agent prints nothing in case of directories:

    my $file_stats = "";
    foreach (@patterns) {
        foreach (bsd_glob("$_")) {
            if (! -f) {
                $file_stats .= "$_|missing\n" if ! -d;
            } elsif (my @infos = stat) {
                $file_stats .= "$_|ok|$infos[7]|$infos[9]\n";
            } else {
                $file_stats .= "$_|stat failed: $!\n";
            }
        }
    }

These two lines

            if (! -f) {
                $file_stats .= "$_|missing\n" if ! -d;

should be changed into

            if (! -f && ! -d) {
                $file_stats .= "$_|missing\n";

Is this made on purpose?