sys/net* : for pointers replace 0 with NULL.

Mostly cosmetical, no functional change.

Found with devel/coccinelle.

3 files changed, 4 insertions, 4 deletions

diff --git a/sys/netgraph/atm/ccatm/ng_ccatm.c b/sys/netgraph/atm/ccatm/ng_ccatm.c
index cdbc86f..cc3f751 100644
--- a/sys/netgraph/atm/ccatm/ng_ccatm.c
+++ b/sys/netgraph/atm/ccatm/ng_ccatm.c
@@ -441,7 +441,7 @@ send_dump(struct ccdata *data, void *uarg, const char *buf)
 		m->m_pkthdr.len = 0;
 	} else {
 		m = m_getcl(M_NOWAIT, MT_DATA, 0);
-		if (m == 0) {
+		if (m == NULL) {
 			m_freem(priv->dump_first);
 			return (ENOBUFS);
 		}
diff --git a/sys/netgraph/ng_socket.c b/sys/netgraph/ng_socket.c
index 38da313..76d6383 100644
--- a/sys/netgraph/ng_socket.c
+++ b/sys/netgraph/ng_socket.c
@@ -360,7 +360,7 @@ ngc_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
 {
 	struct ngpcb *const pcbp = sotongpcb(so);
 
-	if (pcbp == 0)
+	if (pcbp == NULL)
 		return (EINVAL);
 	return (ng_bind(nam, pcbp));
 }
@@ -474,7 +474,7 @@ ngd_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
 {
 	struct ngpcb *const pcbp = sotongpcb(so);
 
-	if (pcbp == 0)
+	if (pcbp == NULL)
 		return (EINVAL);
 	return (ng_connect_data(nam, pcbp));
 }
diff --git a/sys/netgraph/ng_source.c b/sys/netgraph/ng_source.c
index 1883ec0..8332d20 100644
--- a/sys/netgraph/ng_source.c
+++ b/sys/netgraph/ng_source.c
@@ -294,7 +294,7 @@ ng_source_newhook(node_p node, hook_p hook, const char *name)
 		sc->input = hook;
 	} else if (strcmp(name, NG_SOURCE_HOOK_OUTPUT) == 0) {
 		sc->output = hook;
-		sc->output_ifp = 0;
+		sc->output_ifp = NULL;
 		bzero(&sc->stats, sizeof(sc->stats));
 	} else
 		return (EINVAL);