Move check after current_out_packet is updated.

lib/packet_mosq.c

@@ -215,12 +215,6 @@ int packet__write(struct mosquitto *mosq)
 	if(!mosq) return MOSQ_ERR_INVAL;
 	if(mosq->sock == INVALID_SOCKET) return MOSQ_ERR_NO_CONN;
 
-#ifdef WITH_BROKER
-	if (mosq->current_out_packet) {
-	   mux__add_out(mosq);
-	}
-#endif
-
 	pthread_mutex_lock(&mosq->current_out_packet_mutex);
 	pthread_mutex_lock(&mosq->out_packet_mutex);
 	if(mosq->out_packet && !mosq->current_out_packet){
@@ -232,6 +226,12 @@ int packet__write(struct mosquitto *mosq)
 	}
 	pthread_mutex_unlock(&mosq->out_packet_mutex);
 
+#ifdef WITH_BROKER
+	if(mosq->current_out_packet){
+	   mux__add_out(mosq);
+	}
+#endif
+
 	state = mosquitto__get_state(mosq);
 #if defined(WITH_TLS) && !defined(WITH_BROKER)
 	if(state == mosq_cs_connect_pending || mosq->want_connect){