mncc_builtin: log type of unhandled message in int_mncc_recv()

Change-Id: Ie65b2da4c3a13ac36132a2f8c9c85cc420c7a5a6
diff --git a/src/libmsc/mncc_builtin.c b/src/libmsc/mncc_builtin.c
index 286fb56..cc3f55d 100644
--- a/src/libmsc/mncc_builtin.c
+++ b/src/libmsc/mncc_builtin.c
@@ -370,7 +370,8 @@
 		rc = mncc_tx_to_cc(net, data);
 		break;
 	default:
-		LOGP(DMNCC, LOGL_NOTICE, "(call %x) Message unhandled\n", callref);
+		LOGP(DMNCC, LOGL_NOTICE, "(call %x) Message '%s' unhandled\n",
+		     callref, get_mncc_name(msg_type));
 		break;
 	}