rabbitmq: don't declare reply_to queue on rabbitmq_publish()

There is no need to declare a reply-to queue on simple rabbitmq_publish().
The consume will never happen, thus one queue remained spawned, for each
rabbitmq_publish() call.

src/modules/rabbitmq/rabbitmq.c

@@ -175,7 +175,6 @@ static int rabbitmq_publish(struct sip_msg* msg, char* in_exchange, char* in_rou
 	int reconnect_attempts = 0;
 	int log_ret;
 	str exchange, routingkey, messagebody, contenttype;
-	amqp_bytes_t reply_to_queue;
 
 	// sanity checks
 	if (get_str_fparam(&exchange, msg, (fparam_t*)in_exchange) < 0) {
@@ -231,44 +230,13 @@ reconnect:
 		return RABBITMQ_ERR_CHANNEL;
 	}
 
-	// alloc queue
-	amqp_queue_declare_ok_t *r = amqp_queue_declare(conn, 1, amqp_empty_bytes, 0, 0, 0, 1, amqp_empty_table);
-	if (log_on_amqp_error(amqp_get_rpc_reply(conn), "amqp_queue_declare()") != AMQP_RESPONSE_NORMAL) {
-		LM_ERR("FAIL: amqp_queue_declare()\n");
-		amqp_channel_close(conn, 1, AMQP_REPLY_SUCCESS);
-		return RABBITMQ_ERR_QUEUE;
-	}
-
-	// alloc bytes
-	reply_to_queue = amqp_bytes_malloc_dup(r->queue);
-	LM_DBG("%.*s\n", (int)reply_to_queue.len, (char*)reply_to_queue.bytes);
-	if (reply_to_queue.bytes == NULL) {
-		amqp_channel_close(conn, 1, AMQP_REPLY_SUCCESS);
-		amqp_bytes_free(reply_to_queue);
-		LM_ERR("Out of memory while copying queue name");
-		return -1;
-	}
-
 	// alloc properties
 	amqp_basic_properties_t props;
 	props._flags = AMQP_BASIC_CONTENT_TYPE_FLAG |
 			AMQP_BASIC_DELIVERY_MODE_FLAG |
-			AMQP_BASIC_REPLY_TO_FLAG |
 			AMQP_BASIC_CORRELATION_ID_FLAG;
 	props.content_type = amqp_cstring_bytes(contenttype.s);
 	props.delivery_mode = 2; /* persistent delivery mode */
-	props.reply_to = amqp_bytes_malloc_dup(reply_to_queue);
-	if (props.reply_to.bytes == NULL) {
-		// debug
-		LM_ERR("Out of memory while copying queue name");
-
-		// cleanup
-		amqp_channel_close(conn, 1, AMQP_REPLY_SUCCESS);
-		amqp_bytes_free(reply_to_queue);
-
-		// error
-		return -1;
-	}
 	props.correlation_id = amqp_cstring_bytes("1");
 
 	// publish
@@ -285,7 +253,6 @@ reconnect:
 
 			// cleanup
 			amqp_channel_close(conn, 1, AMQP_REPLY_SUCCESS);
-			amqp_bytes_free(reply_to_queue);
 
 			// error
 			return RABBITMQ_ERR_PUBLISH;
@@ -295,8 +262,6 @@ reconnect:
 	LM_DBG("SUCCESS: amqp_basic_publish()\n");
 
 	// cleanup
-	amqp_bytes_free(props.reply_to);
-	amqp_bytes_free(reply_to_queue);
 	amqp_channel_close(conn, 1, AMQP_REPLY_SUCCESS);
 
 	// success