[Coverity] Fixed memory leaks

content/renderer/v8_value_converter_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/v8_value_converter_impl.h"
 
 #include <string>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 239 matching lines @@
     result->Append(child);
   }
   return result;
 }
 
 base::BinaryValue* V8ValueConverterImpl::FromV8Buffer(
     v8::Handle<v8::Value> val) const {
   char* data = NULL;
   size_t length = 0;
 
-  WebKit::WebArrayBuffer* array_buffer =
-      WebKit::WebArrayBuffer::createFromV8Value(val);
-  if (array_buffer) {
+  scoped_ptr<WebKit::WebArrayBuffer> array_buffer(
+      WebKit::WebArrayBuffer::createFromV8Value(val));
+  scoped_ptr<WebKit::WebArrayBufferView> view;
+  if (array_buffer.get()) {
     data = reinterpret_cast<char*>(array_buffer->data());
     length = array_buffer->byteLength();
   } else {
-    WebKit::WebArrayBufferView* view =
-        WebKit::WebArrayBufferView::createFromV8Value(val);
-    if (view) {
+    view.reset(WebKit::WebArrayBufferView::createFromV8Value(val));
+    if (view.get()) {
       data = reinterpret_cast<char*>(view->baseAddress()) + view->byteOffset();
       length = view->byteLength();
     }
   }
 
   if (data)
     return base::BinaryValue::CreateWithCopiedBuffer(data, length);
   else
     return NULL;
 }
@@ skipping 44 matching lines @@
     // on the browser which doesn't additionally check for null will fail.
     // We can avoid all bugs related to this by stripping null.
     if (strip_null_from_objects_ && child->IsType(Value::TYPE_NULL))
       continue;
 
     result->SetWithoutPathExpansion(std::string(*name_utf8, name_utf8.length()),
                                     child.release());
   }
   return result.release();
 }