Get rid of NULLs in xfa/

xfa/fxfa/app/xfa_ffwidgetacc.cpp

Index: xfa/fxfa/app/xfa_ffwidgetacc.cpp
diff --git a/xfa/fxfa/app/xfa_ffwidgetacc.cpp b/xfa/fxfa/app/xfa_ffwidgetacc.cpp
index c44084894189b07c9bef4ae9eb63ead9b0f18632..a59b65e058549b6b7e15767ea9946c39491b4b67 100644
--- a/xfa/fxfa/app/xfa_ffwidgetacc.cpp
+++ b/xfa/fxfa/app/xfa_ffwidgetacc.cpp
@@ -35,7 +35,7 @@ static void XFA_FFDeleteCalcData(void* pData) {
 }
 
 static XFA_MAPDATABLOCKCALLBACKINFO gs_XFADeleteCalcData = {
-    XFA_FFDeleteCalcData, NULL};
+    XFA_FFDeleteCalcData, nullptr};
 
 class CXFA_WidgetLayoutData {
  public:
@@ -134,7 +134,7 @@ class CXFA_TextEditData : public CXFA_FieldLayoutData {
 class CXFA_ImageEditData : public CXFA_FieldLayoutData {
  public:
   CXFA_ImageEditData()
-      : m_pDIBitmap(NULL),
+      : m_pDIBitmap(nullptr),
         m_bNamedImage(FALSE),
         m_iImageXDpi(0),
         m_iImageYDpi(0) {}
@@ -220,7 +220,7 @@ void CXFA_WidgetAcc::ResetData() {
         if (!pAcc) {
           continue;
         }
-        CXFA_Value defValue(NULL);
+        CXFA_Value defValue(nullptr);
         if (wsValue.IsEmpty() && (defValue = pAcc->GetDefaultValue())) {
           defValue.GetChildValueContent(wsValue);
           SetValue(wsValue, XFA_VALUEPICTURE_Raw);
@@ -280,7 +280,7 @@ void CXFA_WidgetAcc::SetImageEdit(const CFX_WideString& wsContentType,
 CXFA_WidgetAcc* CXFA_WidgetAcc::GetExclGroup() {
   CXFA_Node* pExcl = m_pNode->GetNodeItem(XFA_NODEITEM_Parent);
   if (!pExcl || pExcl->GetClassID() != XFA_ELEMENT_ExclGroup) {
-    return NULL;
+    return nullptr;
   }
   return (CXFA_WidgetAcc*)pExcl->GetWidgetData();
 }
@@ -698,7 +698,7 @@ int32_t CXFA_WidgetAcc::ExecuteScript(CXFA_Script script,
   if (pRetValue)
     *pRetValue = pTmpRetValue.release();
 
-  pContext->SetNodesOfRunScript(NULL);
+  pContext->SetNodesOfRunScript(nullptr);
   return iRet;
 }
 CXFA_FFWidget* CXFA_WidgetAcc::GetNextWidget(CXFA_FFWidget* pWidget) {
@@ -711,7 +711,7 @@ CXFA_FFWidget* CXFA_WidgetAcc::GetNextWidget(CXFA_FFWidget* pWidget) {
   return static_cast<CXFA_FFWidget*>(pLayout);
 }
 void CXFA_WidgetAcc::UpdateUIDisplay(CXFA_FFWidget* pExcept) {
-  CXFA_FFWidget* pWidget = NULL;
+  CXFA_FFWidget* pWidget = nullptr;
   while ((pWidget = GetNextWidget(pWidget)) != nullptr) {
     if (pWidget == pExcept || !pWidget->IsLoaded() ||
         (GetUIType() != XFA_ELEMENT_CheckButton && pWidget->IsFocused())) {
@@ -1474,19 +1474,19 @@ CXFA_TextLayout* CXFA_WidgetAcc::GetTextLayout() {
   return m_pLayoutData
              ? static_cast<CXFA_TextLayoutData*>(m_pLayoutData.get())
                    ->GetTextLayout()
-             : NULL;
+             : nullptr;
 }
 CFX_DIBitmap* CXFA_WidgetAcc::GetImageImage() {
   return m_pLayoutData
              ? static_cast<CXFA_ImageLayoutData*>(m_pLayoutData.get())
                    ->m_pDIBitmap
-             : NULL;
+             : nullptr;
 }
 CFX_DIBitmap* CXFA_WidgetAcc::GetImageEditImage() {
   return m_pLayoutData
              ? static_cast<CXFA_ImageEditData*>(m_pLayoutData.get())
                    ->m_pDIBitmap
-             : NULL;
+             : nullptr;
 }
 
 void CXFA_WidgetAcc::SetImageImage(CFX_DIBitmap* newImage) {
@@ -1573,7 +1573,7 @@ CXFA_Node* CXFA_TextProvider::GetTextNode(FX_BOOL& bRichText) {
     CXFA_Node* pElementNode = m_pWidgetAcc->GetNode();
     CXFA_Node* pValueNode = pElementNode->GetChild(0, XFA_ELEMENT_Value);
     if (!pValueNode) {
-      return NULL;
+      return nullptr;
     }
     CXFA_Node* pChildNode = pValueNode->GetNodeItem(XFA_NODEITEM_FirstChild);
     if (pChildNode && pChildNode->GetClassID() == XFA_ELEMENT_ExData) {
@@ -1603,13 +1603,13 @@ CXFA_Node* CXFA_TextProvider::GetTextNode(FX_BOOL& bRichText) {
   } else if (m_eType == XFA_TEXTPROVIDERTYPE_Caption) {
     CXFA_Node* pCaptionNode =
         m_pWidgetAcc->GetNode()->GetChild(0, XFA_ELEMENT_Caption);
-    if (pCaptionNode == NULL) {
-      return NULL;
-    }
+    if (!pCaptionNode)
+      return nullptr;
+
     CXFA_Node* pValueNode = pCaptionNode->GetChild(0, XFA_ELEMENT_Value);
-    if (pValueNode == NULL) {
-      return NULL;
-    }
+    if (!pValueNode)
+      return nullptr;
+
     CXFA_Node* pChildNode = pValueNode->GetNodeItem(XFA_NODEITEM_FirstChild);
     if (pChildNode && pChildNode->GetClassID() == XFA_ELEMENT_ExData) {
       CFX_WideString wsContentType;
@@ -1622,9 +1622,9 @@ CXFA_Node* CXFA_TextProvider::GetTextNode(FX_BOOL& bRichText) {
   }
   CXFA_Node* pItemNode =
       m_pWidgetAcc->GetNode()->GetChild(0, XFA_ELEMENT_Items);
-  if (pItemNode == NULL) {
-    return NULL;
-  }
+  if (!pItemNode)
+    return nullptr;
+
   CXFA_Node* pNode = pItemNode->GetNodeItem(XFA_NODEITEM_FirstChild);
   while (pNode) {
     CFX_WideStringC wsName;
@@ -1638,7 +1638,7 @@ CXFA_Node* CXFA_TextProvider::GetTextNode(FX_BOOL& bRichText) {
     }
     pNode = pNode->GetNodeItem(XFA_NODEITEM_NextSibling);
   }
-  return NULL;
+  return nullptr;
 }
 CXFA_Para CXFA_TextProvider::GetParaNode() {
   if (m_eType == XFA_TEXTPROVIDERTYPE_Text) {
@@ -1677,8 +1677,8 @@ FX_BOOL CXFA_TextProvider::GetEmbbedObj(FX_BOOL bURI,
     CXFA_Node* pWidgetNode = m_pWidgetAcc->GetNode();
     CXFA_Node* pParent = pWidgetNode->GetNodeItem(XFA_NODEITEM_Parent);
     CXFA_Document* pDocument = pWidgetNode->GetDocument();
-    CXFA_Node* pIDNode = NULL;
-    CXFA_WidgetAcc* pEmbAcc = NULL;
+    CXFA_Node* pIDNode = nullptr;
+    CXFA_WidgetAcc* pEmbAcc = nullptr;
     if (pParent) {
       pIDNode = pDocument->GetNodeByID(pParent, wsAttr.AsStringC());
     }