From 9e1e6c599dc0d911fe1888b8a1788a3e1d73117b Mon Sep 17 00:00:00 2001
From: peah <peah@webrtc.org>
Date: Wed, 14 Dec 2016 03:12:20 -0800
Subject: [PATCH] Corrected access of null pointer in audioproc_f: The previous
 CL that added the ability to add and artificial nearend signal had an issue
 with null pointer access.

This is addressed in this CL.

BUG=webrtc:6018

Review-Url: https://codereview.webrtc.org/2573033003
Cr-Commit-Position: refs/heads/master@{#15600}
---
 .../audio_processing/test/aec_dump_based_simulator.cc        | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/webrtc/modules/audio_processing/test/aec_dump_based_simulator.cc b/webrtc/modules/audio_processing/test/aec_dump_based_simulator.cc
index 10d4fcdf6f..f444967a10 100644
--- a/webrtc/modules/audio_processing/test/aec_dump_based_simulator.cc
+++ b/webrtc/modules/audio_processing/test/aec_dump_based_simulator.cc
@@ -230,12 +230,11 @@ void AecDumpBasedSimulator::Process() {
         << "Only mono files for the artificial nearend are supported, "
            "reverted to not using the artificial nearend file";
 
+    const int sample_rate_hz = artificial_nearend_file->sample_rate();
     artificial_nearend_buffer_reader_.reset(
         new ChannelBufferWavReader(std::move(artificial_nearend_file)));
     artificial_nearend_buf_.reset(new ChannelBuffer<float>(
-        rtc::CheckedDivExact(artificial_nearend_file->sample_rate(),
-                             kChunksPerSecond),
-        1));
+        rtc::CheckedDivExact(sample_rate_hz, kChunksPerSecond), 1));
   }
 
   webrtc::audioproc::Event event_msg;