message: Re-fix tests
diff: @@ -234,10 +234,14 @@ LinearImage PNGDecoder::decode() {
  png_set_tRNS_to_alpha(mPNG);
  }
  if (getColorSpace() == ImageDecoder::ColorSpace::SRGB) {
  + double gamma = 1.0;
  + png_get_gAMA(mPNG, mInfo, &gamma);
  + if (gamma != 1.0) {
  png_set_alpha_mode(mPNG, PNG_ALPHA_PNG, PNG_DEFAULT_sRGB);
  + }
  } else {
  - png_set_alpha_mode(mPNG, PNG_ALPHA_PNG, PNG_GAMMA_LINEAR);
  png_set_gamma_fixed(mPNG, PNG_FP_1, PNG_FP_1);
  + png_set_alpha_mode(mPNG, PNG_ALPHA_PNG, PNG_GAMMA_LINEAR);
  }
  if (bitDepth < 16) {
  png_set_expand_16(mPNG);
  