ENH: delete protection in case of pointer modification

Code/Visualization/otbImageLayer.h

@@ -118,13 +118,10 @@ public:
   /** Set/Get the rendering function */
   void SetRenderingFunction(RenderingFunctionType * function)
   {
-    if(m_RenderingFunction != function)
-      {
-      m_RenderingFunction = function;
-      m_QuicklookRenderingFilter->SetRenderingFunction(m_RenderingFunction);
-      m_ExtractRenderingFilter->SetRenderingFunction(m_RenderingFunction);
-      m_ScaledExtractRenderingFilter->SetRenderingFunction(m_RenderingFunction);
-      }
+    m_RenderingFunction = function;
+    m_QuicklookRenderingFilter->SetRenderingFunction(m_RenderingFunction);
+    m_ExtractRenderingFilter->SetRenderingFunction(m_RenderingFunction);
+    m_ScaledExtractRenderingFilter->SetRenderingFunction(m_RenderingFunction);
   }
   itkGetObjectMacro(RenderingFunction,RenderingFunctionType);
 

Code/Visualization/otbRenderingImageFilter.h

@@ -153,11 +153,8 @@ public:
    */
   void SetRenderingFunction(RenderingFunctionType * function)
   {
-    if(function != this->GetFunctor().GetFunction())
-      {
-      this->GetFunctor().SetFunction(function);
-      this->Modified();
-      }
+    this->GetFunctor().SetFunction(function);
+    this->Modified();
   }
 
   /**