[iOS] Changed ptr to const ref for RTCConfiguration initialization

webrtc/sdk/objc/Framework/Classes/RTCPeerConnection.mm

 /*
  *  Copyright 2015 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 273 matching lines @@
     return NO;
   }
   CopyConstraintsIntoRtcConfiguration(_nativeConstraints.get(),
                                       config.get());
   return _peerConnection->SetConfiguration(*config);
 }
 
 - (RTCConfiguration *)configuration {
   webrtc::PeerConnectionInterface::RTCConfiguration config =
     _peerConnection->GetConfiguration();
-  return [[RTCConfiguration alloc] initWithNativeConfiguration:&config];
+  return [[RTCConfiguration alloc] initWithNativeConfiguration:config];
 }
 
 - (void)close {
   _peerConnection->Close();
 }
 
 - (void)addIceCandidate:(RTCIceCandidate *)candidate {
   std::unique_ptr<const webrtc::IceCandidateInterface> iceCandidate(
       candidate.nativeCandidate);
   _peerConnection->AddIceCandidate(iceCandidate.get());
@@ skipping 287 matching lines @@
     case RTCStatsOutputLevelDebug:
       return webrtc::PeerConnectionInterface::kStatsOutputLevelDebug;
   }
 }
 
 - (rtc::scoped_refptr<webrtc::PeerConnectionInterface>)nativePeerConnection {
   return _peerConnection;
 }
 
 @end