coverity: hnbgw_cn: avoid NULL deref in LOGP

Related: CID#321281
Change-Id: Icc2b45c8df8d92cfb42582615313d83389cf1621
---
M src/osmo-hnbgw/hnbgw_cn.c
1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/osmo-hnbgw/hnbgw_cn.c b/src/osmo-hnbgw/hnbgw_cn.c
index 58b0af8..b95cf28 100644
--- a/src/osmo-hnbgw/hnbgw_cn.c
+++ b/src/osmo-hnbgw/hnbgw_cn.c
@@ -861,7 +861,8 @@
 	sccp = osmo_sccp_simple_client_on_ss7_id(g_hnbgw, ss7 ? ss7->cfg.id : 0, cnlink->name, DEFAULT_PC_HNBGW,
 						 OSMO_SS7_ASP_PROT_M3UA, 0, "localhost", -1, "localhost");
 	if (!sccp) {
-		LOG_CNLINK(cnlink, DCN, LOGL_ERROR, "Failed to configure 'cs7 instance %u'\n", ss7->cfg.id);
+		LOG_CNLINK(cnlink, DCN, LOGL_ERROR, "Failed to configure SCCP on 'cs7 instance %u'\n",
+			   ss7 ? ss7->cfg.id : 0);
 		return -1;
 	}
 	ss7 = osmo_sccp_get_ss7(sccp);

