Correction warnings debug - wall

Code/BasicFilters/otbSpectralAngleDistanceImageFilter.txx

@@ -76,7 +76,7 @@ SpectralAngleDistanceImageFilter<TInputImage,TOutputImage>
       double normProd1=0.0;
       double normProd2=0.0;
       InputPixelType pixel = inputIt.Get();
-      for (int i=0; i<pixel.Size(); i++)
+      for (unsigned int i=0; i<pixel.Size(); i++)
 	{
 	  scalarProd += pixel[i]*m_ReferencePixel[i];
 	  normProd1 += pixel[i]*pixel[i];

Code/FeatureExtraction/otbNonMaxRemovalByDirectionFilter.h

@@ -44,6 +44,7 @@ namespace Functor
 	  {
 	    if (itA.GetCenterPixel() != 0) 
 	      {
+		TOutput resp = 0;
 		typename TInput1::OffsetType offset1,offset2;
 		int neighborhoodNumber;
 		if (itB.GetCenterPixel() > 0)
@@ -84,13 +85,10 @@ namespace Functor
 		if ((itA.GetCenterPixel() > itA.GetPixel(offset1)) 
 		    && (itA.GetCenterPixel() > itA.GetPixel(offset2))) 
 		  {
-		    return itA.GetCenterPixel();
-		  }
-		else
-		  {
-		    return 0;
+		    resp =  itA.GetCenterPixel();
 		  }
 	      }
+	    return resp;
 	  }
       };
   }

Code/IO/otbSpatialObjectDXFReader.txx

@@ -112,7 +112,6 @@ SpatialObjectDXFReader<TSpatialObject>
 ::GenerateData()
 {
   TestFileExistanceAndReadability();
-  GroupSpatialObjectType * ptr = this->GetOutput();
   typedef otb::DXFToSpatialObjectGroupFilter<TSpatialObject> CreationFilter;
   typename CreationFilter::Pointer creationClass = CreationFilter::New();
   if (m_LayerName.size()>0)