Remove implicit cast from CFX_WideString to (const wchar_t*)

xfa/fxfa/parser/xfa_utils_imp.cpp

 // 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
 
 #include "xfa/fxfa/parser/xfa_utils.h"
 
 #include "core/fxcrt/include/fx_ext.h"
 #include "xfa/fde/xml/fde_xml_imp.h"
@@ skipping 179 matching lines @@
 void XFA_GetPlainTextFromRichText(CFDE_XMLNode* pXMLNode,
                                   CFX_WideString& wsPlainText) {
   if (pXMLNode == NULL) {
     return;
   }
   switch (pXMLNode->GetType()) {
     case FDE_XMLNODE_Element: {
       CFDE_XMLElement* pXMLElement = static_cast<CFDE_XMLElement*>(pXMLNode);
       CFX_WideString wsTag;
       pXMLElement->GetLocalTagName(wsTag);
-      uint32_t uTag = FX_HashCode_String_GetW(wsTag, wsTag.GetLength(), TRUE);
+      uint32_t uTag =
+          FX_HashCode_String_GetW(wsTag.c_str(), wsTag.GetLength(), TRUE);
       if (uTag == 0x0001f714) {
         wsPlainText += L"\n";
       } else if (uTag == 0x00000070) {
         if (!wsPlainText.IsEmpty()) {
           wsPlainText += L"\n";
         }
       } else if (uTag == 0xa48ac63) {
         if (!wsPlainText.IsEmpty() &&
             wsPlainText[wsPlainText.GetLength() - 1] != '\n') {
           wsPlainText += L"\n";
@@ skipping 103 matching lines @@
                                             0.0000000000000001};
 FX_DOUBLE XFA_WideStringToDouble(const CFX_WideString& wsStringVal) {
   CFX_WideString wsValue = wsStringVal;
   wsValue.TrimLeft();
   wsValue.TrimRight();
   int64_t nIntegral = 0;
   uint32_t dwFractional = 0;
   int32_t nExponent = 0;
   int32_t cc = 0;
   FX_BOOL bNegative = FALSE, bExpSign = FALSE;
-  const FX_WCHAR* str = (const FX_WCHAR*)wsValue;
+  const FX_WCHAR* str = wsValue.c_str();
   int32_t len = wsValue.GetLength();
   if (str[0] == '+') {
     cc++;
   } else if (str[0] == '-') {
     bNegative = TRUE;
     cc++;
   }
   int32_t nIntegralLen = 0;
   while (cc < len) {
     if (str[cc] == '.' || str[cc] == 'E' || str[cc] == 'e' ||
@@ skipping 59 matching lines @@
 FX_DOUBLE XFA_ByteStringToDouble(const CFX_ByteStringC& szStringVal) {
   CFX_WideString wsValue = CFX_WideString::FromUTF8(szStringVal);
   return XFA_WideStringToDouble(wsValue);
 }
 
 int32_t XFA_MapRotation(int32_t nRotation) {
   nRotation = nRotation % 360;
   nRotation = nRotation < 0 ? nRotation + 360 : nRotation;
   return nRotation;
 }