Get rid of NULLs in xfa/

xfa/fgas/layout/fgas_rtfbreak.h

Index: xfa/fgas/layout/fgas_rtfbreak.h
diff --git a/xfa/fgas/layout/fgas_rtfbreak.h b/xfa/fgas/layout/fgas_rtfbreak.h
index d2041615d0595187dc7c90e4faeda8929f805425..ee30df287b54ce8d659835fb8dc9f05d3196c3ca 100644
--- a/xfa/fgas/layout/fgas_rtfbreak.h
+++ b/xfa/fgas/layout/fgas_rtfbreak.h
@@ -65,15 +65,15 @@ class IFGAS_Font;
 
 struct FX_RTFTEXTOBJ {
   FX_RTFTEXTOBJ() {
-    pStr = NULL;
-    pWidths = NULL;
+    pStr = nullptr;
+    pWidths = nullptr;
     iLength = 0;
-    pFont = NULL;
+    pFont = nullptr;
     fFontSize = 12.0f;
     dwLayoutStyles = 0;
     iCharRotation = 0;
     iBidiLevel = 0;
-    pRect = NULL;
+    pRect = nullptr;
     wLineBreakChar = L'\n';
     iHorizontalScale = 100;
     iVerticalScale = 100;
@@ -109,11 +109,10 @@ class CFX_RTFPiece : public CFX_Target {
         m_iVerticalScale(100),
         m_dwLayoutStyles(0),
         m_dwIdentity(0),
-        m_pChars(NULL),
-        m_pUserData(NULL) {}
+        m_pChars(nullptr),
+        m_pUserData(nullptr) {}
   ~CFX_RTFPiece() { Reset(); }
   void AppendChar(const CFX_RTFChar& tc) {
-    ASSERT(m_pChars != NULL);
     m_pChars->Add(tc);
     if (m_iWidth < 0) {
       m_iWidth = tc.m_iCharWidth;
@@ -128,15 +127,15 @@ class CFX_RTFPiece : public CFX_Target {
   int32_t GetLength() const { return m_iChars; }
   int32_t GetEndChar() const { return m_iStartChar + m_iChars; }
   CFX_RTFChar& GetChar(int32_t index) {
-    ASSERT(index > -1 && index < m_iChars && m_pChars != NULL);
+    ASSERT(index > -1 && index < m_iChars && m_pChars);
     return *m_pChars->GetDataPtr(m_iStartChar + index);
   }
   CFX_RTFChar* GetCharPtr(int32_t index) const {
-    ASSERT(index > -1 && index < m_iChars && m_pChars != NULL);
+    ASSERT(index > -1 && index < m_iChars && m_pChars);
     return m_pChars->GetDataPtr(m_iStartChar + index);
   }
   void GetString(FX_WCHAR* pText) const {
-    ASSERT(pText != NULL);
+    ASSERT(pText);
     int32_t iEndChar = m_iStartChar + m_iChars;
     CFX_RTFChar* pChar;
     for (int32_t i = m_iStartChar; i < iEndChar; i++) {
@@ -150,7 +149,7 @@ class CFX_RTFPiece : public CFX_Target {
     wsText.ReleaseBuffer(m_iChars);
   }
   void GetWidths(int32_t* pWidths) const {
-    ASSERT(pWidths != NULL);
+    ASSERT(pWidths);
     int32_t iEndChar = m_iStartChar + m_iChars;
     CFX_RTFChar* pChar;
     for (int32_t i = m_iStartChar; i < iEndChar; i++) {
@@ -219,13 +218,11 @@ class CFX_RTFLine {
   int32_t GetLineEnd() const { return m_iStart + m_iWidth; }
   void RemoveAll(FX_BOOL bLeaveMemory = FALSE) {
     CFX_RTFChar* pChar;
-    IFX_Retainable* pUnknown;
     int32_t iCount = m_LineChars.GetSize();
     for (int32_t i = 0; i < iCount; i++) {
       pChar = m_LineChars.GetDataPtr(i);
-      if ((pUnknown = pChar->m_pUserData) != NULL) {
-        pUnknown->Release();
-      }
+      if (pChar->m_pUserData)
+        pChar->m_pUserData->Release();
     }
     m_LineChars.RemoveAll();
     m_LinePieces.RemoveAll(bLeaveMemory);
@@ -277,8 +274,8 @@ class CFX_RTFBreak {
   int32_t GetDisplayPos(const FX_RTFTEXTOBJ* pText,
                         FXTEXT_CHARPOS* pCharPos,
                         FX_BOOL bCharCode = FALSE,
-                        CFX_WideString* pWSForms = NULL,
-                        FX_AdjustCharDisplayPos pAdjustPos = NULL) const;
+                        CFX_WideString* pWSForms = nullptr,
+                        FX_AdjustCharDisplayPos pAdjustPos = nullptr) const;
   int32_t GetCharRects(const FX_RTFTEXTOBJ* pText,
                        CFX_RectFArray& rtArray,
                        FX_BOOL bCharBBox = FALSE) const;