message: Initialize color with zeros in TextureInterpolation::Area
  This was in `TextureInterpolation::Area`, which isn't used by default, so we didn't spot it earlier.
diff: @@ -374,7 +374,7 @@ extract_texture(const core::Mesh& mesh, Eigen::Matrix<float, 3, 4> affine_camera
  const float max_b = max(max(src_texel_upper_left[1], src_texel_upper_right[1]),
  max(src_texel_lower_left[1], src_texel_lower_right[1]));
  - Eigen::Vector3i color; // std::uint8_t actually.
  + Eigen::Vector3i color = Eigen::Vector3i::Zero(); // std::uint8_t actually.
  int num_texels = 0;
  // loop over square in which quadrangle out of the four corners of pixel is
  