Make NULL a (void*)0 whereever possible, and fix the warnings(-Werror)

that this provokes. "Wherever possible" means "In the kernel OR NOT
C++" (implying C).

There are places where (void *) pointers are not valid, such as for
function pointers, but in the special case of (void *)0, agreement
settles on it being OK.

Most of the fixes were NULL where an integer zero was needed; many
of the fixes were NULL where ascii <nul> ('\0') was needed, and a
few were just "other".

Tested on: i386 sparc64

1 files changed, 1 insertions, 1 deletions

diff --git a/usr.sbin/mountd/mountd.c b/usr.sbin/mountd/mountd.c
index 6091dab5bc18..a52ee0db4347 100644
--- a/usr.sbin/mountd/mountd.c
+++ b/usr.sbin/mountd/mountd.c
@@ -283,7 +283,7 @@ main(argc, argv)
 	in_port_t svcport = 0;
 
 	udp6conf = tcp6conf = NULL;
-	udp6sock = tcp6sock = NULL;
+	udp6sock = tcp6sock = 0;
 
 	/* Check that another mountd isn't already running. */
 	if ((mountdlockfd = (open(MOUNTDLOCK, O_RDONLY|O_CREAT, 0444))) == -1)