message: gltfpack: Update KTX2 according to spec update
  With the latest spec update, padding for key/value data and mip levels
  is now included even for the last entry, which slightly simplifies the
  implementation.
diff: @@ -46,7 +46,7 @@ enum
  // KTX Specification: 3.1. identifier
  static const uint8_t Ktx2FileIdentifier[12] = {
  - 0xAB, 0x4B, 0x54, 0x58, 0x20, 0x32, 0x30, 0xBB, 0x0D, 0x0A, 0x1A, 0x0A,
  + 0xAB, 0x4B, 0x54, 0x58, 0x20, 0x32, 0x30, 0xBB, 0x0D, 0x0A, 0x1A, 0x0A, //
  };
  // KTX Specification: 3.12.2. Basis Universal Global Data
  @@ -190,7 +190,6 @@ std::string basisToKtx(const std::string& basis, bool srgb)
  kvp += value;
  kvp += '\0';
  - if (i + 1 != kvp.size())
  kvp.resize((kvp.size() + 3) & ~3);
  }
  @@ -294,12 +293,9 @@ std::string basisToKtx(const std::string& basis, bool srgb)
  write(ktx, sgd_level_offset + level_index * sizeof(Ktx2BasisImageDesc), sgd_image);
  - if (i + 1 != levels)
  ktx.resize((ktx.size() + 7) & ~7);
  }
  - ktx.resize((ktx.size() + 7) & ~7);
  -
  return ktx;
  }
  