Log Message:
Remove incorrect 'free()' from libspamc.c (used in 'spamc'). Patch copied
from stable branch of SA CVS repository.

On other operating systems 'spamc' was reported to cause a core dump if
'spamd' was not running. At least NetBSD/i386 1.5.3 seems not to be as
severely affected, I only got 'spamc in free(): warning: junk
pointer, too high to make sense.'.