Merge branch 'warning-fixes' into 'master'

app/otbSARAmplitudeEstimation.cxx

app/otbSARCartesianMeanEstimation.cxx

app/otbSARCartesianMeanWithMeanPerLineEstimation.cxx

app/otbSARCoRegistration.cxx

app/otbSARCorrectionGrid.cxx

app/otbSARCorrelationGrid.cxx

app/otbSARDEMGrid.cxx

app/otbSARDEMProjection.cxx

app/otbSARDEMToAmplitude.cxx

app/otbSARDoppler0.cxx

app/otbSARFineDeformationGrid.cxx

app/otbSARFineMetadata.cxx

app/otbSARGridStatistics.cxx

app/otbSARInterferogram.cxx

app/otbSARMultiLook.cxx

app/otbSARRobustInterferogram.cxx

app/otbSARTopographicPhase.cxx

include/otbSARAmplitudeEstimationFunctor.h

include/otbSARCartesianMeanFunctor.h

include/otbSARCartesianMeanWithMeanPerLineFunctor.h