Use another vector for installed fonts in CFX_FontMapper

fpdfsdk/cfx_systemhandler.cpp

 // Copyright 2016 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 "fpdfsdk/cfx_systemhandler.h"
 
 #include <memory>
 
@@ skipping 84 matching lines @@
   if (!pFontMgr)
     return false;
 
   CFX_FontMapper* pFontMapper = pFontMgr->GetBuiltinMapper();
   if (!pFontMapper)
     return false;
 
   if (pFontMapper->m_InstalledTTFonts.empty())
     pFontMapper->LoadInstalledFonts();
 
-  for (const auto& font : pFontMapper->m_InstalledTTFonts) {
-    if (font.Compare(sFontFaceName.AsStringC()))
+  for (const auto& it : pFontMapper->m_InstalledTTFonts) {
+    if (it.second.Compare(sFontFaceName.AsStringC()))
       return true;
   }
   return false;
 }
 
 CPDF_Font* CFX_SystemHandler::AddNativeTrueTypeFontToPDF(
     CPDF_Document* pDoc,
     CFX_ByteString sFontFaceName,
     uint8_t nCharset) {
   if (!pDoc)
@@ skipping 17 matching lines @@
   return !!m_pEnv->IsSHIFTKeyDown(nFlag);
 }
 
 bool CFX_SystemHandler::IsCTRLKeyDown(uint32_t nFlag) const {
   return !!m_pEnv->IsCTRLKeyDown(nFlag);
 }
 
 bool CFX_SystemHandler::IsALTKeyDown(uint32_t nFlag) const {
   return !!m_pEnv->IsALTKeyDown(nFlag);
 }