[poppler] Minor Improvement: use const char * instead of char *

[Albert Astals Cid]

El Dimarts, 16 d'octubre de 2012, a les 17:30:24, 王璐 va escriure:
> Hi guys,
> 
>   This patch adds 'const' to a few 'char * fileName' that appear in
> parameter lists.

Hi, this patch increases the difference of our code to the xpdf code with no 
real gain (since we use the -Wno-write-strings flag) so I'm not adding it to 
the repository.

Cheers,
  Albert

> 
> 
>   regards,
> 
>   - Lu Wang
>   2012.10.16