message: photo: fix integer overflow
  There is no cast to wide integer type:
  std::numeric_limits<ST>::max() * std::numeric_limits<ST>::max()
diff: @@ -52,8 +52,8 @@ static bool ocl_calcAlmostDist2Weight(UMat & almostDist2Weight,
  FT almostDist2ActualDistMultiplier = (FT)(1 << almostTemplateWindowSizeSqBinShift) / templateWindowSizeSq;
  const FT WEIGHT_THRESHOLD = 1e-3f;
  - int maxDist = normType == NORM_L1 ? std::numeric_limits<ST>::max() * cn :
  - std::numeric_limits<ST>::max() * std::numeric_limits<ST>::max() * cn;
  + WT maxDist = normType == NORM_L1 ? (WT)std::numeric_limits<ST>::max() * cn :
  + (WT)std::numeric_limits<ST>::max() * (WT)std::numeric_limits<ST>::max() * cn;
  int almostMaxDist = (int)(maxDist / almostDist2ActualDistMultiplier + 1);
  FT den[4];
  CV_Assert(hn > 0 && hn <= 4);
  