PVS-Studio warning V601 for IPP Samples

class MeMV
{
public:
  MeMV(){};
  MeMV(int a0){x = (Ipp16s)a0; y=(Ipp16s)a0;};
  MeMV(int a0, int a1){x = (Ipp16s)a0; y=(Ipp16s)a1;};
  ...
}

MeMV MePredictCalculatorVC1::GetPrediction8x8()
{
  ...
  default:
    return false;
  ...
}

This suspicious code was found in IPP Samples project by PVS-Studio static code analyzer.
Warning message is:
V601 The 'false' value becomes a class object. me umc_vec_prediction.cpp 754

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/