fix error on destroy

lib/query-stream.js

@@ -49,7 +49,7 @@ class QueryStream extends Readable {
   _onresponse (err, message, peer, request, to, type) {
     this.inflight--
 
-    if (err && to.id) {
+    if (err && to && to.id) {
       // Request, including retries, failed completely
       // Remove the "to" node.
       const node = this._node.bucket.get(to.id)