N1QL queries failing on clusters without FTS nodes - Refreshing indexes failed n1fty: fetchBleveMaxResultWindow failed - cause: no fts endpoints available

This was working fine in 6.5.0-2521, but issue is seen 6.5.0-2524 onwards.

Running any select query on a cluster which doesnt have an FTS node fails with the following error:

[

{ "code": 5000, "msg": "n1fty: fetchBleveMaxResultWindow failed - cause: no fts endpoints available", "query": "select city from `travel-sample` where city is not null;" }

]

Steps :
1. Create a 1-node cluster with kv, n1ql and index nodes
2. Install travel-sample bucket
3. Run query select city from `travel-sample` where city is not null;

Query fails with the above error