Module Name:	src
Committed By:	drochner
Date:		Fri Nov 20 17:44:40 UTC 1998

Modified Files:
	src/sys/arch/i386/i386: pmap.c
Log Message:
Set the p-v list head to NULL if there are no valid mappings.
This should be not necessary because the pv_pmap member is already set to
NULL in this case which should keep the pv_next pointer from being
followed. However, PR port-i386/5291 reports that this measure helps in
at least one case (VINO).
Reviewed by Chuck Cranor, final fix is functionally identical to the PR's
proposal.