PPAPI: Fix WebSocket Var ref leak receiving binary

ppapi/tests/test_websocket.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 "ppapi/tests/test_websocket.h"
 
 #include <stdio.h>
 #include <string.h>
 
 #include <algorithm>
@@ skipping 446 matching lines @@
 }
 
 std::string TestWebSocket::TestValidConnect() {
   int32_t result;
   PP_Resource ws = Connect(GetFullURL(kEchoServerURL), &result, "");
   ASSERT_TRUE(ws);
   ASSERT_EQ(PP_OK, result);
   PP_Var extensions = websocket_interface_->GetExtensions(ws);
   ASSERT_TRUE(AreEqualWithString(extensions, ""));
   core_interface_->ReleaseResource(ws);
+  ReleaseVar(extensions);
 
   PASS();
 }
 
 std::string TestWebSocket::TestInvalidClose() {
   PP_Var reason = CreateVarString("close for test");
   TestCompletionCallback callback(instance_->pp_instance(), callback_type());
   TestCompletionCallback async_callback(instance_->pp_instance(), PP_REQUIRED);
 
   // Close before connect.
@@ skipping 1027 matching lines @@
   size_t last_event = events_on_closed - 1;
   for (uint32_t i = 1; i < last_event; ++i) {
     ASSERT_EQ(WebSocketEvent::EVENT_MESSAGE, events[i].event_type);
     ASSERT_TRUE(AreEqualWithString(events[i].var.pp_var(), message));
   }
   ASSERT_EQ(WebSocketEvent::EVENT_CLOSE, events[last_event].event_type);
   ASSERT_TRUE(events[last_event].was_clean);
 
   PASS();
 }