Merge pull request #1512 from pijyoi/retransmit_fix

fix: ZMQ_TCP_RETRANSMIT_TIMEOUT not applied to bind socket

src/tcp_listener.cpp

@@ -100,6 +100,7 @@ void zmq::tcp_listener_t::in_event ()
 
     tune_tcp_socket (fd);
     tune_tcp_keepalives (fd, options.tcp_keepalive, options.tcp_keepalive_cnt, options.tcp_keepalive_idle, options.tcp_keepalive_intvl);
+    tune_tcp_retransmit_timeout (fd, options.tcp_retransmit_timeout);
 
     // remember our fd for ZMQ_SRCFD in messages
     socket->set_fd(fd);