More static analysis fixes

[toxieainc]

and one more in the hope of fixing #178 or #203, unfortunately no luck with those

[dukeeeey]

const unsigned* const __restrict

That's not standard c++.

[toxieainc]

True, but pretty much all common c++ compilers accept it, we also use it in all commercial code i work on for a living (which covers pretty much all x86/arm/ppc platforms in use nowadays). In fact, most c++ compilers generate less efficient code without it.
But if you prefer, i can also remove it, of course.

[dukeeeey]

Supermodel ends up on all kinds of platforms you wouldn't expect, xbox etc. Would prefer to use standard functions. But the texture loading code is not a hot path. In such cases readability is more preferable.

[toxieainc]

Removed again..