upstream commit

Compare pointers to NULL rather than 0.

ok djm@

Upstream-ID: 21616cfea27eda65a06e772cc887530b9a1a27f8
diff --git a/monitor.c b/monitor.c
index 0af23d6..395a6f6 100644
--- a/monitor.c
+++ b/monitor.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: monitor.c,v 1.153 2015/09/04 04:44:08 djm Exp $ */
+/* $OpenBSD: monitor.c,v 1.154 2015/10/20 23:24:25 mmcc Exp $ */
 /*
  * Copyright 2002 Niels Provos <provos@citi.umich.edu>
  * Copyright 2002 Markus Friedl <markus@openbsd.org>
@@ -966,7 +966,7 @@
 	char *response;
 	int authok;
 
-	if (authctxt->as == 0)
+	if (authctxt->as == NULL)
 		fatal("%s: no bsd auth session", __func__);
 
 	response = buffer_get_string(m, NULL);
@@ -1847,7 +1847,7 @@
 	sshbuf_free(child_state);
 	child_state = NULL;
 
-	if ((kex = ssh->kex) != 0) {
+	if ((kex = ssh->kex) != NULL) {
 		/* XXX set callbacks */
 #ifdef WITH_OPENSSL
 		kex->kex[KEX_DH_GRP1_SHA1] = kexdh_server;