SDLImage should perform a null check when converting an image to display format as it might fail and throw an exception upon failure

The conversion might fail when an image is larger than the resolution.
For details, check the pasted mail below:

Hi,

For information I have successfully ported guichan on windows ce and since
your code
is very clean it was an esay game.
I will provide you my Visual project when you will have fixed screenshots
on sourceforge ;-).
Please also modify in sdlimage L163 :

if (tmp)
               {
                       if (hasPink)
                       {
                               SDL_SetColorKey(tmp, SDL_SRCCOLORKEY,
                                       SDL_MapRGB(tmp->format,255,0,255));
                       }

                       if (hasAlpha)
                       {
                               SDL_SetAlpha(tmp, SDL_SRCALPHA, 255);
                       }
               }

Because sometimes tmp is NULL and it makes crashs.

Vincent Richomme.

Original issue reported on code.google.com by olof.nae...@gmail.com on 27 Apr 2009 at 4:51

mettli / guichan

SDLImage should perform a null check when converting an image to display format as it might fail and throw an exception upon failure #110