BUG: check for the coherence of sizes of probas in the batch case

Modules/Learning/LearningBase/include/otbImageClassificationFilter.hxx

@@ -340,7 +340,13 @@ ImageClassificationFilter<TInputImage, TOutputImage, TMaskImage>
         }
        if(computeProbaMap)
        {
-         probaValues = probas->GetMeasurementVector(labIt.GetInstanceIdentifier());
+         //The probas may have different size than the m_NumberOfClasses set by the user
+         auto tempProbaValues = probas->GetMeasurementVector(labIt.GetInstanceIdentifier());
+         for(auto i=0; i<m_NumberOfClasses; ++i)
+         {
+           if(i<tempProbaValues.Size()) probaValues[i] = tempProbaValues[i];
+           else probaValues[i] = 0;
+         }
        }
       ++labIt;
       }

Modules/Learning/Supervised/include/otbSharkRandomForestsMachineLearningModel.hxx

@@ -137,7 +137,6 @@ SharkRandomForestsMachineLearningModel<TInputValue,TOutputValue>
     }
     if (proba != nullptr)
     {
-      ProbaSampleType prob{static_cast<unsigned int>(probas.size())};
       for(size_t i =0; i< probas.size();i++)
       {
         //probas contain the N class probability indexed between 0 and N-1