OLEAUT32: fix detection of GIF palette index >= 128 for transparency

[Marcelo Duarte]

Hi,
Andreas Mohr escreveu:

>Hi,
>
>On Tue, Mar 29, 2005 at 12:43:38PM -0500, Alex Villaci­s Lasso wrote:
>  
>
>>I traced this problem to a one-line bug in the GIF loading code. The 
>>code is supposed to initialize a transparency flag to -1 when no 
>>transparency is used, or else the palette index of the transparency 
>>color. The sample image I was using indicates that the transparency 
>>index is 255. Due to an unintended sign extension, the transparency 
>>index (held in a Byte array of basic type "signed char") is 
>>sign-extended to the variable "transparency" of basic type "signed int". 
>>This causes the flag to be assigned the value -1, which happens to be 
>>the same value used as a no-transparency indicator. So transparency was 
>>    
>>
>                                                     ....^^^^^^^^^^^^    
>
>Heh, 3 times "the transparency" in exactly the same line position, 4 times
>"transparency" in exactly the same position - what did you smoke?? ;-)
>
>(or worse, what did *I* smoke to recognize this?? :-)
>  
>
You is funny.... I am thinking what you smoked.
What I see is that Alex didn't cut the text, but your email client: yes!

>OK, I promise I'll stop that useless fun email here.
>
>Anyway, thanks for all those nice patches,
>
>Andreas Mohr
>
>  
>
;)