Replace some calls to Release() with direct delete, part 1.

xfa/fde/fde_iterator.h

Index: xfa/fde/fde_iterator.h
diff --git a/xfa/fde/fde_iterator.h b/xfa/fde/fde_iterator.h
index 4d089254ea771a0fb1864ebd44f5427b6d781848..4f3fdf3f297c083e7ad99501eb9e9fcaf5ade4d8 100644
--- a/xfa/fde/fde_iterator.h
+++ b/xfa/fde/fde_iterator.h
@@ -20,9 +20,7 @@ struct FDE_CANVASITEM {
 class CFDE_VisualSetIterator : public CFX_Target {
  public:
   CFDE_VisualSetIterator();
-  ~CFDE_VisualSetIterator();
-
-  void Release() { delete this; }
+  ~CFDE_VisualSetIterator() override;
 
   FX_BOOL AttachCanvas(IFDE_CanvasSet* pCanvas);
   FX_BOOL FilterObjects(uint32_t dwObjects = 0xFFFFFFFF);