NULL is cooler than 0 when pointers are concerned

ok gcc & md5 (aka no binary change)

diff --git a/sys/net/if_ethersubr.c b/sys/net/if_ethersubr.c
index 1a473cc..83551fd 100644 (file)
--- a/sys/net/if_ethersubr.c
+++ b/sys/net/if_ethersubr.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: if_ethersubr.c,v 1.171 2014/04/22 11:43:07 henning Exp $      */
+/*     $OpenBSD: if_ethersubr.c,v 1.172 2014/04/22 12:07:20 henning Exp $      */
 /*     $NetBSD: if_ethersubr.c,v 1.19 1996/05/07 02:40:30 thorpej Exp $        */
 
 /*
@@ -213,7 +213,7 @@ ether_addheader(struct mbuf **m, struct ifnet *ifp, u_int16_t etype,
                        struct ether_vlan_header        *evh;
 
                        M_PREPEND(*m, sizeof(*evh), M_DONTWAIT);
-                       if (*m == 0)
+                       if (*m == NULL)
                                return (-1);
                        evh = mtod(*m, struct ether_vlan_header *);
                        memcpy(evh->evl_dhost, edst, sizeof(evh->evl_dhost));
@@ -228,7 +228,7 @@ ether_addheader(struct mbuf **m, struct ifnet *ifp, u_int16_t etype,
        }
 #endif /* NVLAN > 0 */
        M_PREPEND(*m, ETHER_HDR_LEN, M_DONTWAIT);
-       if (*m == 0)
+       if (*m == NULL)
                return (-1);
        eh = mtod(*m, struct ether_header *);
        eh->ether_type = etype;
@@ -252,7 +252,7 @@ ether_output(struct ifnet *ifp0, struct mbuf *m0, struct sockaddr *dst,
        u_char *esrc;
        struct mbuf *m = m0;
        struct rtentry *rt;
-       struct mbuf *mcopy = (struct mbuf *)0;
+       struct mbuf *mcopy = NULL;
        struct ether_header *eh;
        struct arpcom *ac = (struct arpcom *)ifp0;
        short mflags;
@@ -297,7 +297,7 @@ ether_output(struct ifnet *ifp0, struct mbuf *m0, struct sockaddr *dst,
                }
 
                if (rt->rt_flags & RTF_GATEWAY) {
-                       if (rt->rt_gwroute == 0)
+                       if (rt->rt_gwroute == NULL)
                                goto lookup;
                        if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) {
                                rtfree(rt);
@@ -721,7 +721,7 @@ decapsulate:
                                        m_adj(m, etype - m->m_pkthdr.len);
                                m_adj(m, 6);
                                M_PREPEND(m, sizeof(*eh), M_DONTWAIT);
-                               if (m == 0)
+                               if (m == NULL)
                                        goto done;
                                *mtod(m, struct ether_header *) = *eh;
                                goto decapsulate;