ioat(4): Minor style cleanups

Suggested by:	ngie
Reviewed by:	jimharris
Approved by:	markj (mentor)
Sponsored by:	EMC / Isilon Storage Division
Differential Revision:	https://reviews.freebsd.org/D3481

sys/dev/ioat/ioat.c

@@ -798,7 +798,7 @@ resize_ring(struct ioat_softc *ioat, int order)
 			new_idx = (ioat->tail + i) & (new_size - 1);
 
 			ring[new_idx] = ioat_alloc_ring_entry(ioat);
-			if (!ring[new_idx]) {
+			if (ring[new_idx] == NULL) {
 				while (i--) {
 					new_idx2 = (ioat->tail + i) &
 					    (new_size - 1);

tools/tools/ioat/Makefile

@@ -1,7 +1,6 @@
 # $FreeBSD$
 
 PROG=	ioatcontrol
-SRCS=	ioatcontrol.c
 MAN=	ioatcontrol.8
 CFLAGS+=	-I${.CURDIR:H:H:H}/sys/dev/ioat
 WARNS?=	6