ZOOKEEPER-1238. when the linger time was changed for NIO the patch missed 
Netty (Skye Wanderman-Milne via fpj)


git-svn-id: https://svn.apache.org/repos/asf/zookeeper/branches/branch-3.4@1557614 13f79535-47bb-0310-9956-ffa450edef68