NULL noise in drivers/net

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/3c515.c b/drivers/net/3c515.c
index 684bab7..6ab84b6 100644
--- a/drivers/net/3c515.c
+++ b/drivers/net/3c515.c
@@ -1361,7 +1361,7 @@
 			/* Check if the packet is long enough to just accept without
 			   copying to a properly sized skbuff. */
 			if (pkt_len < rx_copybreak
-			    && (skb = dev_alloc_skb(pkt_len + 4)) != 0) {
+			    && (skb = dev_alloc_skb(pkt_len + 4)) != NULL) {
 				skb_reserve(skb, 2);	/* Align IP on 16 byte boundaries */
 				/* 'skb_put()' points to the start of sk_buff data area. */
 				memcpy(skb_put(skb, pkt_len),