Merge branch 'warning_unused_parameter' into 'develop'

WRG: fix unused parameter warning

See merge request orfeotoolbox/otb!190

Modules/Filtering/Statistics/include/otbStreamingStatisticsMapFromLabelImageFilter.hxx

@@ -52,7 +52,7 @@ PersistentStreamingStatisticsMapFromLabelImageFilter<TInputVectorImage, TLabelIm
 template<class TInputVectorImage, class TLabelImage>
 typename itk::DataObject::Pointer
 PersistentStreamingStatisticsMapFromLabelImageFilter<TInputVectorImage, TLabelImage>
-::MakeOutput(DataObjectPointerArraySizeType output)
+::MakeOutput(DataObjectPointerArraySizeType itkNotUsed(output))
 {
   return static_cast<itk::DataObject*>(PixelValueMapObjectType::New().GetPointer());
 }