Function stbi__skip

lite/example/cpp_example/mge/cv/stb_image.h:1681–1697

// nothing
#else
static void stbi__skip(stbi__context* s, int n) {
    if (n == 0)
        return;  // already there!
    if (n < 0) {
        s->img_buffer = s->img_buffer_end;
        return;
    }
    if (s->io.read) {
        int blen = (int)(s->img_buffer_end - s->img_buffer);
        if (blen < n) {
            s->img_buffer = s->img_buffer_end;
            (s->io.skip)(s->io_user_data, n - blen);
            return;
        }
    }
    s->img_buffer += n;
}
#endif

#if defined(STBI_NO_PNG) && defined(STBI_NO_TGA) && defined(STBI_NO_HDR) && \