Fix leak in SkFontHost_fontconfig temporary code.

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 "SkFontConfigTypeface.h"
 #include "SkFontDescriptor.h"
@@ skipping 136 matching lines @@
         size_t length = stream->getLength();
 
         const void* memory = stream->getMemoryBase();
         if (NULL != memory) {
             return new SkMemoryStream(memory, length, true);
         }
 
         SkAutoTMalloc<uint8_t> allocMemory(length);
         stream->rewind();
         if (length == stream->read(allocMemory.get(), length)) {
-            return new SkMemoryStream(allocMemory.detach(), length);
+            SkAutoTUnref<SkMemoryStream> copyStream(new SkMemoryStream());
+            copyStream->setMemoryOwned(allocMemory.detach(), length);
+            return copyStream.detach();
         }
 
         stream->rewind();
         stream->ref();
     } else {
         SkAutoTUnref<SkFontConfigInterface> fci(RefFCI());
         if (NULL == fci.get()) {
             return NULL;
         }
         stream = fci->openStream(this->getIdentity());
@@ skipping 20 matching lines @@
                 : 0;
 }
 
 void FontConfigTypeface::onGetFontDescriptor(SkFontDescriptor* desc,
                                              bool* isLocalStream) const {
     desc->setFamilyName(this->getFamilyName());
     *isLocalStream = SkToBool(this->getLocalStream());
 }
 
 ///////////////////////////////////////////////////////////////////////////////