Release DnsRecords when failing to notify promise (#13437)

Motivation:

We need to release the DnsRecords if we didnt transfer ownership to
prevent leaks.

Modifications:

Release DnsRecords when trySuccess(...) returns false

Result:

Correctly release reference counted resources

resolver-dns/src/main/java/io/netty/resolver/dns/DnsNameResolver.java

@@ -52,6 +52,7 @@
 import io.netty.resolver.InetNameResolver;
 import io.netty.resolver.ResolvedAddressTypes;
 import io.netty.util.NetUtil;
+import io.netty.util.ReferenceCountUtil;
 import io.netty.util.concurrent.EventExecutor;
 import io.netty.util.concurrent.FastThreadLocal;
 import io.netty.util.concurrent.Future;
@@ -905,7 +906,12 @@ private Future<List<DnsRecord>> resolveAll(DnsQuestion question, DnsRecord[] add
                 }
 
                 if (!result.isEmpty()) {
-                    trySuccess(promise, result);
+                    if (!trySuccess(promise, result)) {
+                        // We were not able to transfer ownership, release the records to prevent leaks.
+                        for (DnsRecord r: result) {
+                            ReferenceCountUtil.safeRelease(r);
+                        }
+                    }
                     return promise;
                 }
             }