Function ucvector_resize

external/lodepng/lodepng.cpp:300–303

returns 1 if success, 0 if failure ==> nothing done*/

/*returns 1 if success, 0 if failure ==> nothing done*/
static unsigned ucvector_resize(ucvector* p, size_t size) {
  p->size = size;
  return ucvector_reserve(p, size);
}

static ucvector ucvector_init(unsigned char* buffer, size_t size) {
  ucvector v;