IndexOutOfBoundsException on config with empty vbucket map

[cb-core-179-2] 20:33:48 WARN  CouchbaseCore:179 - Exception while Handling Request Events RequestEvent{request=null}

java.lang.IndexOutOfBoundsException: Index: 988, Size: 0

	at java.util.ArrayList.rangeCheck(ArrayList.java:653)

	at java.util.ArrayList.get(ArrayList.java:429)

	at com.couchbase.client.core.config.DefaultCouchbaseBucketConfig.nodeIndexForMaster(DefaultCouchbaseBucketConfig.java:135)

	at com.couchbase.client.core.node.locate.KeyValueLocator.calculateNodeId(KeyValueLocator.java:165)

	at com.couchbase.client.core.node.locate.KeyValueLocator.locateForCouchbaseBucket(KeyValueLocator.java:124)

	at com.couchbase.client.core.node.locate.KeyValueLocator.locateAndDispatch(KeyValueLocator.java:84)

	at com.couchbase.client.core.RequestHandler.dispatchRequest(RequestHandler.java:231)

	at com.couchbase.client.core.RequestHandler.onEvent(RequestHandler.java:188)

	at com.couchbase.client.core.RequestHandler.onEvent(RequestHandler.java:72)

	at com.couchbase.client.deps.com.lmax.disruptor.BatchEventProcessor.run(BatchEventProcessor.java:129)

	at com.couchbase.client.deps.io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)

	at java.lang.Thread.run(Thread.java:745)