rem: if (string_to_number(s, 0, 0xFFFFFFFF, &len) == -1)
add: if (string_to_number(s, 0, 0, &len) == -1)
context: parse_expire(const char *s){	unsigned int len;		if (string_to_number(s, 0, 0xFFFFFFFF, &len) == -1)		exit_error(PARAMETER_PROBLEM, "expire value invalid: `%s'\n", s);	else		return len;}