Don't call unconfigureWebRTCSession if setConfiguration fails. webrtc:7471

webrtc/modules/audio_device/ios/audio_device_ios.h

 /*
  *  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 188 matching lines @@
   // defines |playout_parameters_| and |record_parameters_|.
   void SetupAudioBuffersForActiveAudioSession();
 
   // Creates the audio unit.
   bool CreateAudioUnit();
 
   // Updates the audio unit state based on current state.
   void UpdateAudioUnit(bool can_play_or_record);
 
   // Configures the audio session for WebRTC.
-  void ConfigureAudioSession();
+  bool ConfigureAudioSession();
   // Unconfigures the audio session.
   void UnconfigureAudioSession();
 
   // Activates our audio session, creates and initializes the voice-processing
   // audio unit and verifies that we got the preferred native audio parameters.
   bool InitPlayOrRecord();
 
   // Closes and deletes the voice-processing I/O unit.
   void ShutdownPlayOrRecord();
 
@@ skipping 70 matching lines @@
   // Audio interruption observer instance.
   RTCAudioSessionDelegateAdapter* audio_session_observer_;
 
   // Set to true if we've activated the audio session.
   bool has_configured_session_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_DEVICE_IOS_AUDIO_DEVICE_IOS_H_