rem: if (tcp_recv(download->con, &c, 1) <= 0 || c != '1') {
add: if (tcp_recv(download->con, (uint8_t *) &c, 1) <= 0 || c != '1') {
context: static void on_download_connect(int fd, input_id input, void *udata){	OpnDownload *download = (OpnDownload *) udata;	char c;	if (net_sock_error(fd)) {		opn_download_free(download);		return;	}		input_remove(input);	if (tcp_recv(download->con, &c, 1) <= 0 || c != '1') {		opn_download_free(download);		return;	}	input_add(fd, download, INPUT_WRITE, on_download_write,	          TIMEOUT_DEF);}