hnb-test: fix wrong domain indicator in ranap.

ranap_new_msg_initial_ue() called with wrong argument order.
diff --git a/src/tests/hnb-test.c b/src/tests/hnb-test.c
index 0f794b7..569bcdd 100644
--- a/src/tests/hnb-test.c
+++ b/src/tests/hnb-test.c
@@ -494,7 +494,7 @@
 
 	/* FIXME: patch imsi */
 
-	return ranap_new_msg_initial_ue(is_ps, conn_id, &rnc_id, lu, sizeof(lu));
+	return ranap_new_msg_initial_ue(conn_id, is_ps, &rnc_id, lu, sizeof(lu));
 }
 
 DEFUN(chan, chan_cmd,