[Mtools] Segfault in mdir

[Simon Large]

Hi folks,

Just giving mlabel on ARM9 big disks a final test on 4.0.6 - it works by
the way. Out of curiosity I tried mdir, and that works OK when I give it
a disk, but the default seems broken.

# ./mdir s:
 Volume in drive S has no label
 Volume Serial Number is 564A-70C2
Directory for S:/

No files
                      8 193 540 096 bytes free
# ./mdir
Segmentation fault
#

When I try the same thing with 3.9.11 I get
# ./mdir
Can't open /dev/fd0: No such file or directory
Cannot initialize 'A:'
#

Simon