Get rid of NULLs in xfa/

xfa/fxfa/app/xfa_fftext.cpp

Index: xfa/fxfa/app/xfa_fftext.cpp
diff --git a/xfa/fxfa/app/xfa_fftext.cpp b/xfa/fxfa/app/xfa_fftext.cpp
index 1000b91c089244c1bbfb1e5bcb4c6654002088d1..2cefa09364537cebd5ca1208699d3a760ac15c40 100644
--- a/xfa/fxfa/app/xfa_fftext.cpp
+++ b/xfa/fxfa/app/xfa_fftext.cpp
@@ -39,15 +39,15 @@ void CXFA_FFText::RenderWidget(CFX_Graphics* pGS,
       GetRectWithoutRotate(rtText);
       if (CXFA_Margin mgWidget = m_pDataAcc->GetMargin()) {
         CXFA_LayoutItem* pItem = this;
-        if (pItem->GetPrev() == NULL && pItem->GetNext() == NULL) {
+        if (!pItem->GetPrev() && !pItem->GetNext()) {
           XFA_RectWidthoutMargin(rtText, mgWidget);
         } else {
           FX_FLOAT fLeftInset, fRightInset, fTopInset = 0, fBottomInset = 0;
           mgWidget.GetLeftInset(fLeftInset);
           mgWidget.GetRightInset(fRightInset);
-          if (pItem->GetPrev() == NULL) {
+          if (!pItem->GetPrev()) {
             mgWidget.GetTopInset(fTopInset);
-          } else if (pItem->GetNext() == NULL) {
+          } else if (!pItem->GetNext()) {
             mgWidget.GetBottomInset(fBottomInset);
           }
           rtText.Deflate(fLeftInset, fTopInset, fRightInset, fBottomInset);
@@ -77,7 +77,7 @@ FX_BOOL CXFA_FFText::PerformLayout() {
   }
   pTextLayout->m_Blocks.RemoveAll();
   CXFA_LayoutItem* pItem = this;
-  if (pItem->GetPrev() == NULL && pItem->GetNext() == NULL) {
+  if (!pItem->GetPrev() && !pItem->GetNext()) {
     return TRUE;
   }
   pItem = pItem->GetFirst();
@@ -85,11 +85,11 @@ FX_BOOL CXFA_FFText::PerformLayout() {
     CFX_RectF rtText;
     pItem->GetRect(rtText);
     if (CXFA_Margin mgWidget = m_pDataAcc->GetMargin()) {
-      if (pItem->GetPrev() == NULL) {
+      if (!pItem->GetPrev()) {
         FX_FLOAT fTopInset;
         mgWidget.GetTopInset(fTopInset);
         rtText.height -= fTopInset;
-      } else if (pItem->GetNext() == NULL) {
+      } else if (!pItem->GetNext()) {
         FX_FLOAT fBottomInset;
         mgWidget.GetBottomInset(fBottomInset);
         rtText.height -= fBottomInset;
@@ -108,37 +108,35 @@ FX_BOOL CXFA_FFText::OnLButtonDown(uint32_t dwFlags, FX_FLOAT fx, FX_FLOAT fy) {
     return FALSE;
   }
   const FX_WCHAR* wsURLContent = GetLinkURLAtPoint(fx, fy);
-  if (NULL == wsURLContent) {
+  if (!wsURLContent)
     return FALSE;
-  }
+
   SetButtonDown(TRUE);
   return TRUE;
 }
+
 FX_BOOL CXFA_FFText::OnMouseMove(uint32_t dwFlags, FX_FLOAT fx, FX_FLOAT fy) {
   CFX_RectF rtBox;
   GetRectWithoutRotate(rtBox);
-  if (!rtBox.Contains(fx, fy)) {
-    return FALSE;
-  }
-  const FX_WCHAR* wsURLContent = GetLinkURLAtPoint(fx, fy);
-  if (NULL == wsURLContent) {
+  if (!rtBox.Contains(fx, fy))
     return FALSE;
-  }
-  return TRUE;
+  return !!GetLinkURLAtPoint(fx, fy);
 }
+
 FX_BOOL CXFA_FFText::OnLButtonUp(uint32_t dwFlags, FX_FLOAT fx, FX_FLOAT fy) {
   if (!IsButtonDown()) {
     return FALSE;
   }
   SetButtonDown(FALSE);
   const FX_WCHAR* wsURLContent = GetLinkURLAtPoint(fx, fy);
-  if (NULL == wsURLContent) {
+  if (!wsURLContent)
     return FALSE;
-  }
+
   CXFA_FFDoc* pDoc = GetDoc();
   pDoc->GetDocProvider()->GotoURL(pDoc, wsURLContent, FALSE);
   return TRUE;
 }
+
 FWL_WidgetHit CXFA_FFText::OnHitTest(FX_FLOAT fx, FX_FLOAT fy) {
   CFX_RectF rtBox;
   GetRectWithoutRotate(rtBox);
@@ -150,9 +148,9 @@ FWL_WidgetHit CXFA_FFText::OnHitTest(FX_FLOAT fx, FX_FLOAT fy) {
 }
 const FX_WCHAR* CXFA_FFText::GetLinkURLAtPoint(FX_FLOAT fx, FX_FLOAT fy) {
   CXFA_TextLayout* pTextLayout = m_pDataAcc->GetTextLayout();
-  if (NULL == pTextLayout) {
-    return NULL;
-  }
+  if (!pTextLayout)
+    return nullptr;
+
   FX_FLOAT x(fx), y(fy);
   FWLToClient(x, y);
   const CXFA_PieceLineArray* pPieceLines = pTextLayout->GetPieceLines();
@@ -167,7 +165,7 @@ const FX_WCHAR* CXFA_FFText::GetLinkURLAtPoint(FX_FLOAT fx, FX_FLOAT fy) {
       }
     }
   }
-  return NULL;
+  return nullptr;
 }
 void CXFA_FFText::FWLToClient(FX_FLOAT& fx, FX_FLOAT& fy) {
   CFX_RectF rtWidget;