[Libburn] patch libisofs/tree.c to avoid null pointer reference

[Derek Foreman]

On Fri, 27 Aug 2004, Todd Kulesza wrote:

> On Fri, 2004-08-27 at 09:33, Derek Foreman wrote:
>> On Fri, 27 Aug 2004, Alan Jenkins wrote:
>>
>>> Hopefully the attached patch should be self explanatory.  I think you would
>>> always get a null pointer ref if the directory name was invalid.  I will
>>> check the function  for adding a file as well
>>
>> The patch looks good to me.  I'll merge it sometime this weekend if Todd
>> or Benji don't sound off against it.
>>
>
> Looks fine to me.
>
> Todd

Then in it goes.