--- a/media/webrtc/trunk/webrtc/modules/audio_coding/main/acm2/audio_coding_module_impl.cc
+++ b/media/webrtc/trunk/webrtc/modules/audio_coding/main/acm2/audio_coding_module_impl.cc
@@ -2065,17 +2065,17 @@ bool AudioCodingImpl::RegisterSendCodec(
   if (frame_size_samples > 0) {
     codec.pacsize = frame_size_samples;
   }
   return acm_old_->RegisterSendCodec(codec) == 0;
 }
 
 const AudioEncoder* AudioCodingImpl::GetSenderInfo() const {
   FATAL() << "Not implemented yet.";
-  return reinterpret_cast<const AudioEncoder*>(NULL);
+  return NULL;
 }
 
 const CodecInst* AudioCodingImpl::GetSenderCodecInst() {
   if (acm_old_->SendCodec(&current_send_codec_) != 0) {
     return NULL;
   }
   return &current_send_codec_;
 }
@@ -2084,17 +2084,17 @@ int AudioCodingImpl::Add10MsAudio(const 
   if (acm_old_->Add10MsData(audio_frame) != 0) {
     return -1;
   }
   return acm_old_->Process();
 }
 
 const ReceiverInfo* AudioCodingImpl::GetReceiverInfo() const {
   FATAL() << "Not implemented yet.";
-  return reinterpret_cast<const ReceiverInfo*>(NULL);
+  return NULL;
 }
 
 bool AudioCodingImpl::RegisterReceiveCodec(AudioDecoder* receive_codec) {
   FATAL() << "Not implemented yet.";
   return false;
 }
 
 bool AudioCodingImpl::RegisterReceiveCodec(int decoder_type,