[Merge to XFA] Revert "Revert "Add type cast definitions for CPDF_Dictionary.""

fpdfsdk/src/fpdfview.cpp

Index: fpdfsdk/src/fpdfview.cpp
diff --git a/fpdfsdk/src/fpdfview.cpp b/fpdfsdk/src/fpdfview.cpp
index cfc2f0db04f9bee983524b104d0ded317831766c..c2157e96bd5e20c48ada34302cddcf2b0fdc8e8e 100644
--- a/fpdfsdk/src/fpdfview.cpp
+++ b/fpdfsdk/src/fpdfview.cpp
@@ -1051,8 +1051,8 @@ DLLEXPORT FPDF_DEST STDCALL FPDF_GetNamedDest(FPDF_DOCUMENT document,
   }
   if (!pDestObj)
     return NULL;
-  if (pDestObj->GetType() == PDFOBJ_DICTIONARY) {
-    pDestObj = ((CPDF_Dictionary*)pDestObj)->GetArray(FX_BSTRC("D"));
+  if (CPDF_Dictionary* pDict = pDestObj->AsDictionary()) {
+    pDestObj = pDict->GetArray(FX_BSTRC("D"));
     if (!pDestObj)
       return NULL;
   }