roberto e5e1ccbdfe Stop run() from dereferencing a NULL pointer when you enter a valid command
then a ^D at the prompt.

cdcontrol> play 1 14
cdcontrol>
zsh: 40874 segmentation fault (core dumped)  /usr/sbin/cdcontrol -f /dev/cd1c
1999-11-18 23:04:38 +00:00
..
1999-08-28 01:35:59 +00:00