vp8: use TryFrom<&[i32]> for &[i32; 16] instead of copying &[i32] into [i32; 16]
vp8: use TryFrom<&[i32]> for &[i32; 16] instead of copying &[i32] into [i32; 16]

PistonDevelopers/image,PistonDevelopers/image