Motown: Fix unique_ptrs to arrays so deallocation is done properly

services/media/audio/platform/generic/standard_output_base.cc

 // Copyright 2015 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 <limits>
 
 #include "base/logging.h"
 #include "services/media/audio/audio_track_impl.h"
 #include "services/media/audio/audio_track_to_output_link.h"
 #include "services/media/audio/platform/generic/mixer.h"
@@ skipping 68 matching lines @@
       }
 
       // If we have a mix job, then we must have an output formatter, and an
       // intermediate buffer allocated, and it must be large enough for the mix
       // job we were given.
       DCHECK(mix_buf_);
       DCHECK(output_formatter_);
       DCHECK_LE(cur_mix_job_.buf_frames, mix_buf_frames_);
 
       // Fill the intermediate buffer with silence.
-      size_t bytes_to_zero = sizeof(*mix_buf_)
+      size_t bytes_to_zero = sizeof(int32_t)
                            * cur_mix_job_.buf_frames
                            * output_formatter_->channels();
       ::memset(mix_buf_.get(), 0, bytes_to_zero);
 
       // Mix each track into the intermediate buffer, then clip/format into the
       // final buffer.
       ForeachTrack(setup_mix_, process_mix_);
       output_formatter_->ProduceOutput(mix_buf_.get(),
                                        cur_mix_job_.buf,
                                        cur_mix_job_.buf_frames);
@@ skipping 438 matching lines @@
     step_size = static_cast<uint32_t>(tmp_step_size);
   }
 
   // Done, update our generation.
   out_frames_to_track_frames_gen = job.local_to_output_gen;
 }
 
 }  // namespace audio
 }  // namespace media
 }  // namespace mojo