rem: unsigned char buf[2048];
add: uint8_t buf[2048];
context: static void on_download_read_data(int fd, input_id input, OpnDownload *download){	unsigned char buf[2048];	int bytes;		if (net_sock_error(fd)) {		opn_download_free(download);		return;	}	if ((bytes = tcp_recv(download->con, buf, sizeof(buf))) <= 0)		opn_download_free(download);	opn_proto->chunk_write(opn_proto, download->chunk->transfer,	                       download->chunk, download->chunk->source, buf, bytes);}