fix(kv): Prevent infinite loop condition when listing tasks by org.

In the event that findTaskByIDWithAuth cannot find the task ID contained
in the bucket, the outer loop will never terminate.

This ensures that we are calling Next() along-side any calls to continue
while using a Cursor.

kv/task.go

@@ -399,6 +399,7 @@ func (s *Service) findTasksByOrg(ctx context.Context, tx Tx, filter influxdb.Tas
 		if err != nil {
 			if err == influxdb.ErrTaskNotFound {
 				// we might have some crufty index's
+				k, v = c.Next()
 				continue
 			}
 			return nil, 0, err