COMP: fix functor statement wich return void now and update client code in related tests

...ry/include/otbSinclairToCircularCovarianceMatrixFunctor.h

...Polarimetry/include/otbSinclairToCoherencyMatrixFunctor.h

...olarimetry/include/otbSinclairToCovarianceMatrixFunctor.h

...g/Polarimetry/include/otbSinclairToMuellerMatrixFunctor.h

...est/otbMuellerToPolarisationDegreeAndPowerImageFilter.cxx

...try/test/otbSinclairToCircularCovarianceMatrixFunctor.cxx

.../Polarimetry/test/otbSinclairToCoherencyMatrixFunctor.cxx

...Polarimetry/test/otbSinclairToCovarianceMatrixFunctor.cxx

...ng/Polarimetry/test/otbSinclairToMuellerMatrixFunctor.cxx