[iOS] Changed ptr to const ref for RTCConfiguration initialization

webrtc/sdk/objc/Framework/UnitTests/RTCConfigurationTest.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 81 matching lines @@
   config.audioJitterBufferMaxPackets = maxPackets;
   config.audioJitterBufferFastAccelerate = YES;
   config.iceConnectionReceivingTimeout = timeout;
   config.iceBackupCandidatePairPingInterval = interval;
   config.continualGatheringPolicy =
       RTCContinualGatheringPolicyGatherContinually;
   config.shouldPruneTurnPorts = YES;
 
   webrtc::PeerConnectionInterface::RTCConfiguration *nativeConfig =
       [config createNativeConfiguration];
-  RTCConfiguration *newConfig = [[RTCConfiguration alloc] initWithNativeConfiguration:nativeConfig];
+  RTCConfiguration *newConfig = [[RTCConfiguration alloc]
+      initWithNativeConfiguration:*nativeConfig];
   EXPECT_EQ([config.iceServers count], newConfig.iceServers.count);
   RTCIceServer *newServer = newConfig.iceServers[0];
   RTCIceServer *origServer = config.iceServers[0];
   EXPECT_EQ(origServer.urlStrings.count, server.urlStrings.count);
   std::string origUrl = origServer.urlStrings.firstObject.UTF8String;
   std::string url = newServer.urlStrings.firstObject.UTF8String;
   EXPECT_EQ(origUrl, url);
 
   EXPECT_EQ(config.iceTransportPolicy, newConfig.iceTransportPolicy);
   EXPECT_EQ(config.bundlePolicy, newConfig.bundlePolicy);
@@ skipping 12 matching lines @@
 @end
 
 TEST(RTCConfigurationTest, NativeConfigurationConversionTest) {
   @autoreleasepool {
     RTCConfigurationTest *test = [[RTCConfigurationTest alloc] init];
     [test testConversionToNativeConfiguration];
     [test testNativeConversionToConfiguration];
   }
 }