Remove NULL in xfa/

xfa/fxfa/parser/xfa_document_datadescription_imp.cpp

Index: xfa/fxfa/parser/xfa_document_datadescription_imp.cpp
diff --git a/xfa/fxfa/parser/xfa_document_datadescription_imp.cpp b/xfa/fxfa/parser/xfa_document_datadescription_imp.cpp
index 97ea8dd54bac0f8d6af29ebf28c908ca006d2cd1..bcd6a874b3e3b80979964cf3ce83a0b5f0035abd 100644
--- a/xfa/fxfa/parser/xfa_document_datadescription_imp.cpp
+++ b/xfa/fxfa/parser/xfa_document_datadescription_imp.cpp
@@ -66,7 +66,7 @@ CXFA_Node* XFA_DataDescription_MaybeCreateDataNode(
     XFA_Element eNodeType,
     const CFX_WideString& wsName) {
   if (!pDataParent) {
-    return NULL;
+    return nullptr;
   }
   CXFA_Node* pParentDDNode = pDataParent->GetDataDescriptionNode();
   if (!pParentDDNode) {
@@ -116,6 +116,6 @@ CXFA_Node* XFA_DataDescription_MaybeCreateDataNode(
       pDataNode->SetFlag(XFA_NodeFlag_Initialized, false);
       return pDataNode;
     }
-    return NULL;
+    return nullptr;
   }
 }