message: Don't try to load unsupported files
diff: @@ -77,6 +77,7 @@ bool hdr_image::load(std::string const& filename)
  if (res.size() != 4)
  {
  std::cerr << "Error: invalid resolution string in HDR file\n";
  + return false;
  }
  if (res[0] == "-Y" && res[2] == "+X")
  @@ -87,6 +88,7 @@ bool hdr_image::load(std::string const& filename)
  else
  {
  std::cerr << "Error: unsupported resolution string in HDR file\n";
  + return false;
  }
  format_ = PF_RGB32F;
  