Coverity: Initialize member variables.

media/base/audio_renderer_mixer_input.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 "media/base/audio_renderer_mixer_input.h"
 
 #include "base/logging.h"
 #include "media/base/audio_renderer_mixer.h"
 
 namespace media {
 
 AudioRendererMixerInput::AudioRendererMixerInput(
     const GetMixerCB& get_mixer_cb, const RemoveMixerCB& remove_mixer_cb)
     : playing_(false),
       initialized_(false),
       volume_(1.0f),
       get_mixer_cb_(get_mixer_cb),
       remove_mixer_cb_(remove_mixer_cb),
+      mixer_(NULL),
       callback_(NULL) {
 }
 
 AudioRendererMixerInput::~AudioRendererMixerInput() {
   // Mixer is no longer safe to use after |remove_mixer_cb_| has been called.
   remove_mixer_cb_.Run(params_);
 }
 
 void AudioRendererMixerInput::Initialize(
     const AudioParameters& params,
@@ skipping 29 matching lines @@
 bool AudioRendererMixerInput::SetVolume(double volume) {
   volume_ = volume;
   return true;
 }
 
 void AudioRendererMixerInput::GetVolume(double* volume) {
   *volume = volume_;
 }
 
 }  // namespace media