nat: Fix the return to return CMD_SUCCESS;
diff --git a/openbsc/src/osmo-bsc_nat/bsc_nat_vty.c b/openbsc/src/osmo-bsc_nat/bsc_nat_vty.c
index 9a85cac..40409f8 100644
--- a/openbsc/src/osmo-bsc_nat/bsc_nat_vty.c
+++ b/openbsc/src/osmo-bsc_nat/bsc_nat_vty.c
@@ -429,7 +429,7 @@
 		_nat->acc_lst_name = NULL;
 	}
 
-	return NULL;
+	return CMD_SUCCESS;
 }
 
 DEFUN(cfg_nat_number_rewrite,