message: Fix bad size in KTX reader.
diff: @@ -144,8 +144,9 @@ KtxBundle::KtxBundle(uint8_t const* bytes, uint32_t nbytes) : mBlobs(new KtxBlob
  for (uint32_t mipmap = 0; mipmap < mNumMipLevels; ++mipmap) {
  const uint32_t imageSize = *((uint32_t const*) pdata);
  const uint32_t faceSize = isNonArrayCube ? imageSize : (imageSize / facesPerMip);
  + const uint32_t levelSize = faceSize * mNumCubeFaces * mArrayLength;
  pdata += sizeof(imageSize);
  - memcpy(mBlobs->get(flatten(this, {mipmap, 0, 0})), pdata, imageSize);
  + memcpy(mBlobs->get(flatten(this, {mipmap, 0, 0})), pdata, levelSize);
  for (uint32_t layer = 0; layer < mArrayLength; ++layer) {
  for (uint32_t face = 0; face < mNumCubeFaces; ++face) {
  mBlobs->sizes[flatten(this, {mipmap, layer, face})] = faceSize;
  