lib/zonecut: check if the label hopping failed

diff --git a/lib/zonecut.c b/lib/zonecut.c
index 55d20c810432f66babcf336c988286a6f112fceb..437192385dfe0b013b8291b4a7400cb2274755a8 100644 (file)
--- a/lib/zonecut.c
+++ b/lib/zonecut.c
@@ -327,7 +327,7 @@ int kr_zonecut_find_cached(struct kr_context *ctx, struct kr_zonecut *cut, const
        }
 
        /* Start at QNAME parent. */
-       while (txn) {
+       while (txn && name) {
                if (fetch_ns(ctx, cut, name, txn, timestamp) == 0) {
                        update_cut_name(cut, name);
                        return kr_ok();