PVS-Studio warning V205 for IPP Samples

void write_output_image(...., const Ipp32f *img,
                        ...., const Ipp32s iStep) {
  ...
  img = (Ipp32f*)((unsigned long)(img) + iStep);
  ...
}

This suspicious code was found in IPP Samples project by PVS-Studio static code analyzer.
Warning message is:
V205 Explicit conversion of pointer type to 32-bit integer type: (unsigned long)(img) ipprsample ippr_sample.cpp 480

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