BUG: Replace `atoi`->`std::stoi`->`otb::to<>`

- `atoi` is a known source of problems
- `stoi` doesn't provide much context for non (int-)convertible strings

include/otbSARDEMPolygonsAnalysisImageFilter2.hxx

@@ -23,6 +23,7 @@
 
 #include "otbSARDEMPolygonsAnalysisImageFilter2.h"
 
+#include "otbStringUtilities.h"
 #include "otbVectorImage.h"
 
 #include "itkImageScanlineConstIterator.h"
@@ -229,7 +230,7 @@ SARDEMPolygonsAnalysisImageFilter< TImageIn, TImageOut, TImageDEM, TImageSAR, TF
     }
     else
     {
-      mapRequiredComponents[requiredComponent] = std::stoi(inputKwl.GetMetadataByKey(component));
+      mapRequiredComponents[requiredComponent] = to<int>(inputKwl.GetMetadataByKey(component), "converting metadata "+component+ " (PolygonsAnalysisImageFilter)");
     }
   }