PVS-Studio warning V501 for saga

bool CSoil_Texture::On_Execute(void)
{
  ...
  if (pSandInput->Get_NX()==pClayInput->Get_NX() &&
      pSandInput->Get_NY()==pSandInput->Get_NY() )
  ...
}

This suspicious code was found in saga project by PVS-Studio static code analyzer.
Warning message is:
V501 There are identical sub-expressions 'pSandInput->Get_NY ()' to the left and to the right of the '==' operator. grid_analysis soil_texture.cpp 180

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