About PDM4 on VM

Richard O'Keefe included my changes for VM but there was a minor
error in his last release, which I have fixed here. I've sent
Mr. O'Keefe the diff, but haven't heard from him. Here's the
diff that's changed in this distribution from the canonical
distribution:

diff -r1.1 misc.c
95c95
<        if (fd == NULL) return;
---
>        if (probe == NULL) return;


Please excuse my simplistic approach to making PDM4
compile and run under VM, I'm rather new at this old
but beautiful operating environment.

 Jack Woehr jax@well.com  1998-03-10
