Fixing some warnings on Linux

src/ports/SkFontHost_fontconfig.cpp

 /*
  * Copyright 2008 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkFontConfigInterface.h"
 #include "SkFontDescriptor.h"
 #include "SkFontHost.h"
@@ skipping 231 matching lines @@
         stream->skip(length);
     }
 
     return SkFontHost::CreateTypeface(NULL, familyName, style);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 static SkStream* open_stream(const FontConfigTypeface* face, int* ttcIndex) {
     SkStream* stream = face->getLocalStream();
-    int index;
     if (stream) {
         stream->ref();
         // should have been provided by CreateFromStream()
         *ttcIndex = 0;
     } else {
         SkAutoTUnref<SkFontConfigInterface> fci(RefFCI());
         if (NULL == fci.get()) {
             return NULL;
         }
         stream = fci->openStream(face->getIdentity());
@@ skipping 50 matching lines @@
     return stream.get()
                 ? SkFontStream::GetTableData(stream, ttcIndex,
                                              tag, offset, length, data)
                 : 0;
 }
 
 void FontConfigTypeface::onGetFontDescriptor(SkFontDescriptor* desc) const {
     desc->setStyle(this->style());
     desc->setFamilyName(this->getFamilyName());
 }