Revert "Revert "Add type cast definitions for CPDF_Reference.""

core/src/fpdfdoc/doc_form.cpp

Index: core/src/fpdfdoc/doc_form.cpp
diff --git a/core/src/fpdfdoc/doc_form.cpp b/core/src/fpdfdoc/doc_form.cpp
index 80786088838cfa6aa9b6f2538e443b46b264a36f..3192445d90a286b30752f6ce49f91a17cacecb23 100644
--- a/core/src/fpdfdoc/doc_form.cpp
+++ b/core/src/fpdfdoc/doc_form.cpp
@@ -1086,13 +1086,12 @@ CPDF_FormField* CPDF_InterForm::AddTerminalField(CPDF_Dictionary* pFieldDict) {
     }
     pField = new CPDF_FormField(this, pParent);
     CPDF_Object* pTObj = pDict->GetElement("T");
-    if (pTObj && pTObj->GetType() == PDFOBJ_REFERENCE) {
+    if (ToReference(pTObj)) {
       CPDF_Object* pClone = pTObj->Clone(TRUE);
-      if (pClone) {
+      if (pClone)
         pDict->SetAt("T", pClone);
-      } else {
+      else
         pDict->SetAtName("T", "");
-      }
     }
     m_pFieldTree->SetField(csWName, pField);
   }