Store WideString, not raw pointer, in FX_TXTRUN

xfa/fgas/layout/fgas_textbreak.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef XFA_FGAS_LAYOUT_FGAS_TEXTBREAK_H_
 #define XFA_FGAS_LAYOUT_FGAS_TEXTBREAK_H_
 
 #include "core/fxcrt/include/fx_ucd.h"
@@ skipping 61 matching lines @@
 #define FX_TXTBREAK_MinimumTabWidth 160000
 
 class IFX_TxtAccess {
  public:
   virtual ~IFX_TxtAccess() {}
   virtual FX_WCHAR GetChar(void* pIdentity, int32_t index) const = 0;
   virtual int32_t GetWidth(void* pIdentity, int32_t index) const = 0;
 };
 
 struct FX_TXTRUN {
-  FX_TXTRUN() {
-    pAccess = NULL;
-    pIdentity = NULL;
-    pStr = NULL;
-    pWidths = NULL;
-    iLength = 0;
-    pFont = NULL;
-    fFontSize = 12;
-    dwStyles = 0;
-    iHorizontalScale = 100;
-    iVerticalScale = 100;
-    iCharRotation = 0;
-    dwCharStyles = 0;
-    pRect = NULL;
-    wLineBreakChar = L'\n';
-    bSkipSpace = TRUE;
-  }
+  FX_TXTRUN()
+      : pAccess(nullptr),
+        pIdentity(nullptr),
+        pWidths(nullptr),
+        iLength(0),
+        pFont(nullptr),
+        fFontSize(12),
+        dwStyles(0),
+        iHorizontalScale(100),
+        iVerticalScale(100),
+        iCharRotation(0),
+        dwCharStyles(0),
+        pRect(nullptr),
+        wLineBreakChar(L'\n'),
+        bSkipSpace(TRUE) {}
 
   IFX_TxtAccess* pAccess;
   void* pIdentity;
-  const FX_WCHAR* pStr;
+  CFX_WideString wsStr;
   int32_t* pWidths;
   int32_t iLength;
   IFX_Font* pFont;
   FX_FLOAT fFontSize;
   uint32_t dwStyles;
   int32_t iHorizontalScale;
   int32_t iVerticalScale;
   int32_t iCharRotation;
   uint32_t dwCharStyles;
   const CFX_RectF* pRect;
@@ skipping 216 matching lines @@
   int32_t GetBreakPos(CFX_TxtCharArray& ca,
                       int32_t& iEndPos,
                       FX_BOOL bAllChars = FALSE,
                       FX_BOOL bOnlyBrk = FALSE);
   void SplitTextLine(CFX_TxtLine* pCurLine,
                      CFX_TxtLine* pNextLine,
                      FX_BOOL bAllChars = FALSE);
 };
 
 #endif  // XFA_FGAS_LAYOUT_FGAS_TEXTBREAK_H_