Fix load balancing (#179)
Fix load balancing (#179)

* Fix load balancing

`lbStart.updateAndGet(i -> i++ % resolvers.size())` is a no-op: `i++` increments the local variable, which is lost, and the returned value is simply `i % resolvers.size()`

* Fix precedence

* Update ExtendedResolver.java
dnsjava/dnsjava