Clean up XFA code which causes warnings

xfa/fde/css/fde_cssstyleselector.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/fde/css/fde_cssstyleselector.h"
 
 #include <algorithm>
 #include <memory>
@@ skipping 525 matching lines @@
   }
 }
 void CFDE_CSSStyleSelector::AppendInlineStyle(CFDE_CSSDeclaration* pDecl,
                                               const FX_WCHAR* psz,
                                               int32_t iLen) {
   ASSERT(pDecl && psz && iLen > 0);
   std::unique_ptr<CFDE_CSSSyntaxParser> pSyntax(new CFDE_CSSSyntaxParser);
   if (!pSyntax->Init(psz, iLen, 32, TRUE))
     return;
 
-  int32_t iLen2;
+  int32_t iLen2 = 0;
   const FX_WCHAR* psz2;
   FDE_CSSPROPERTYARGS args;
   args.pStringCache = nullptr;
   args.pStaticStore = m_pInlineStyleStore;
   args.pProperty = nullptr;
   CFX_WideString wsName;
   while (1) {
     FDE_CSSSYNTAXSTATUS eStatus = pSyntax->DoSyntaxParse();
     if (eStatus == FDE_CSSSYNTAXSTATUS_PropertyName) {
       psz2 = pSyntax->GetCurrentString(iLen2);
@@ skipping 1217 matching lines @@
       return FDE_CSSTEXTTRANSFORM_LowerCase;
     default:
       return FDE_CSSTEXTTRANSFORM_None;
   }
 }
 FDE_CSSFONTVARIANT CFDE_CSSStyleSelector::ToFontVariant(
     FDE_CSSPROPERTYVALUE eValue) {
   return eValue == FDE_CSSPROPERTYVALUE_SmallCaps ? FDE_CSSFONTVARIANT_SmallCaps
                                                   : FDE_CSSFONTVARIANT_Normal;
 }