Pgm fix (#3227)

* Relicensing grant by Ming Ji <jiming@yafco.com>

Permission to relicense under any OSI approved license chosen by the current ZeroMQ BDFL.

RELICENSE/answeroo.md

+# Permission to Relicense under MPLv2 or any other OSI approved license chosen by the current ZeroMQ BDFL
+
+This is a statement by Ming Ji
+that grants permission to relicense its copyrights in the libzmq C++
+library (ZeroMQ) under the Mozilla Public License v2 (MPLv2) or any other 
+Open Source Initiative approved license chosen by the current ZeroMQ 
+BDFL (Benevolent Dictator for Life).
+
+A portion of the commits made by the Github handle "answeroo", with
+commit author "answeroo <jiming@yafco.com>", are copyright of Ming Ji.
+This document hereby grants the libzmq project team to relicense libzmq, 
+including all past, present and future contributions of the author listed above.
+
+Ming Ji
+2018/08/20

src/pgm_receiver.cpp

@@ -182,6 +182,7 @@ void zmq::pgm_receiver_t::in_event ()
     while (true) {
         //  Get new batch of data.
         //  Note the workaround made not to break strict-aliasing rules.
+	
         insize = 0;
         void *tmp = NULL;
         ssize_t received = pgm_socket.receive (&tmp, &tsi);