Update missing from AsyncHttpClient#1317

Author: slandelle

netty-bp/resolver-dns/src/main/java/io/netty/resolver/dns/RotationalDnsServerAddresses.java

@@ -16,8 +16,6 @@
 
 package io.netty.resolver.dns;
 
-import io.netty.util.internal.PlatformDependent;
-
 import java.net.InetSocketAddress;
 import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
 
@@ -27,7 +25,7 @@ final class RotationalDnsServerAddresses extends DefaultDnsServerAddresses {
 
     static {
         AtomicIntegerFieldUpdater<RotationalDnsServerAddresses> updater =
-                PlatformDependent.newAtomicIntegerFieldUpdater(RotationalDnsServerAddresses.class, "startIdx");
+                AtomicIntegerFieldUpdater.newUpdater(RotationalDnsServerAddresses.class, "startIdx");
 
         if (updater == null) {
             updater = AtomicIntegerFieldUpdater.newUpdater(RotationalDnsServerAddresses.class, "startIdx");