Problem: indentation issues with PR #3226

Solution: fix them

src/pgm_receiver.cpp

@@ -168,6 +168,7 @@ void zmq::pgm_receiver_t::in_event ()
     if (active_tsi) {
         return;
     }
+
     // Read data from the underlying pgm_socket.
     const pgm_tsi_t *tsi = NULL;
 
@@ -181,7 +182,6 @@ 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);