Synchronize access to @client_threads in LogStash::Outputs::Tcp#2

lmars wants to merge 1 commit intologstash-plugins:mainlogstash-plugins/logstash-output-tcp:mainfrom

lmars:synchronize-tcp-client-threads-accesslmars/logstash-output-tcp:synchronize-tcp-client-threads-accessCopy head branch name to clipboard