Texture init fails when default data pointer is not null

[Cruel]

I'm referring to this line. This is what I expect to work:

C3D_Tex tex;
C3D_TexInit(&tex, 64, 64, GPU_RGB8);

However it will fail depending on the initial value of the data pointer. At the moment, I just use tex.data = NULL; before it. Perhaps it's better to trust the user won't initialize multiple times instead of requiring the struct to be zero'd?

[fincs]

Noted. Currently you are supposed to memset C3D_Tex structures on the stack before initializing them.

[fincs]

See 033c600.