Make CFX_WideString(const CFX_WideString&) explicit.

xfa/fxfa/fm2js/xfa_expression.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/fm2js/xfa_expression.h"
 
 #include "core/fxcrt/include/fx_basic.h"
 
@@ skipping 104 matching lines @@
 
 CXFA_FMVarExpression::CXFA_FMVarExpression(uint32_t line,
                                            const CFX_WideStringC& wsName,
                                            CXFA_FMExpression* pInit)
     : CXFA_FMExpression(line, XFA_FM_EXPTYPE_VAR),
       m_wsName(wsName),
       m_pInit(pInit) {}
 
 void CXFA_FMVarExpression::ToJavaScript(CFX_WideTextBuf& javascript) {
   javascript << FX_WSTRC(L"var ");
-  CFX_WideString tempName = m_wsName;
+  CFX_WideString tempName(m_wsName);
   if (m_wsName.GetAt(0) == L'!') {
     tempName = EXCLAMATION_IN_IDENTIFIER + m_wsName.Mid(1);
   }
   javascript << tempName;
   javascript << FX_WSTRC(L" = ");
   if (m_pInit) {
     m_pInit->ToJavaScript(javascript);
     javascript << tempName;
     javascript << FX_WSTRC(L" = ");
     javascript << XFA_FM_EXPTypeToString(VARFILTER);
     javascript << FX_WSTRC(L"(");
     javascript << tempName;
     javascript << FX_WSTRC(L");\n");
   } else {
     javascript << FX_WSTRC(L"\"\";\n");
   }
 }
 
 void CXFA_FMVarExpression::ToImpliedReturnJS(CFX_WideTextBuf& javascript) {
   javascript << FX_WSTRC(L"var ");
-  CFX_WideString tempName = m_wsName;
+  CFX_WideString tempName(m_wsName);
   if (m_wsName.GetAt(0) == L'!') {
     tempName = EXCLAMATION_IN_IDENTIFIER + m_wsName.Mid(1);
   }
   javascript << tempName;
   javascript << FX_WSTRC(L" = ");
   if (m_pInit) {
     m_pInit->ToJavaScript(javascript);
     javascript << tempName;
     javascript << FX_WSTRC(L" = ");
     javascript << XFA_FM_EXPTypeToString(VARFILTER);
@@ skipping 449 matching lines @@
   }
   javascript << FX_WSTRC(L" = ");
   javascript << RUNTIMEBLOCKTEMPARRAY;
   javascript << FX_WSTRC(L"[");
   javascript << RUNTIMEBLOCKTEMPARRAYINDEX;
   javascript << FX_WSTRC(L"++];\n");
   m_pList->ToImpliedReturnJS(javascript);
   javascript << FX_WSTRC(L"}\n");
   javascript << FX_WSTRC(L"}\n");
 }