make eet_data_image_jpeg_alpha_decode() more like eet_data_image_jpeg_rgb_decode().
make eet_data_image_jpeg_alpha_decode() more like eet_data_image_jpeg_rgb_decode().

eet_data_image_jpeg_rgb_decode() did not had a warning the alpha
version did, as the code is very similar and the return pointer was
not used, make it just like rgb and return an integer.



SVN revision: 67345

gfriloux/eet,gfriloux/eet