issue70: bugfix for scaling factor derivation

source/Lib/EncoderLib/EncNNFilterHOP.cpp

@@ -317,7 +317,7 @@ void EncNNFilterHOP::scaleFactorDerivation(Picture &pic, FilterParameters &prms,
 
     int scale = int(((area_comp * crossMulti - sumOrgResi * sumCnnResi + area_comp * area_comp * stablizingFactor)
            / (area_comp * selfMulti - sumCnnResi * sumCnnResi + area_comp * area_comp * stablizingFactor))
-           * (1 << shift) + 0.5);
+           * (1 << log2ResidueScale) + 0.5);
 
     scale = Clip3(Bot, Up, scale);
     prms.sprm.scale[compID][prmId] = scale;