Remove unused vars (-Wall).
plain 0 should be used. This happens to work because we #define NULL to 0, but is stylistically wrong and can cause problems for people trying to port bits of code to other environments. PR: 2752 Submitted by: Arne Henrik Juul <arnej@imf.unit.no>
drop-in for me and looks substantailly neater than the previous version, so I'll give the floppy tape users a break (but just this once :).