Fix nr of bytes sent to Opus decoder in DTX mode

webrtc/modules/audio_coding/codecs/opus/opus_interface.c

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 95 matching lines @@
   }
 
   if (res <= 2) {
     // Indicates DTX since the packet has nothing but a header. In principle,
     // there is no need to send this packet. However, we do transmit the first
     // occurrence to let the decoder know that the encoder enters DTX mode.
     if (inst->in_dtx_mode) {
       return 0;
     } else {
       inst->in_dtx_mode = 1;
-      return 1;
+      return res;
     }
   }
 
   inst->in_dtx_mode = 0;
   return res;
 }
 
 int16_t WebRtcOpus_SetBitRate(OpusEncInst* inst, int32_t rate) {
   if (inst) {
     return opus_encoder_ctl(inst->encoder, OPUS_SET_BITRATE(rate));
@@ skipping 347 matching lines @@
     return 0;
   }
 
   for (n = 0; n < channels; n++) {
     if (frame_data[0][0] & (0x80 >> ((n + 1) * (frames + 1) - 1)))
       return 1;
   }
 
   return 0;
 }