VoE Utility: Fix a naming nit in RemixAndResample

This was pointed out in https://codereview.webrtc.org/2712743004 after
committing.

BUG=webrtc:7220
NOTRY=True
TBR=solenberg@webrtc.org

Review-Url: https://codereview.webrtc.org/2721123005
Cr-Commit-Position: refs/heads/master@{#16965}
diff --git a/webrtc/voice_engine/utility.cc b/webrtc/voice_engine/utility.cc
index 720817f..f394762 100644
--- a/webrtc/voice_engine/utility.cc
+++ b/webrtc/voice_engine/utility.cc
@@ -41,7 +41,7 @@
                       AudioFrame* dst_frame) {
   const int16_t* audio_ptr = src_data;
   size_t audio_ptr_num_channels = num_channels;
-  int16_t downsampled_audio[AudioFrame::kMaxDataSizeSamples];
+  int16_t downsmixed_audio[AudioFrame::kMaxDataSizeSamples];
 
   // Downmix before resampling.
   if (num_channels > dst_frame->num_channels_) {
@@ -52,8 +52,8 @@
 
     AudioFrameOperations::DownmixChannels(
         src_data, num_channels, samples_per_channel, dst_frame->num_channels_,
-        downsampled_audio);
-    audio_ptr = downsampled_audio;
+        downsmixed_audio);
+    audio_ptr = downsmixed_audio;
     audio_ptr_num_channels = dst_frame->num_channels_;
   }