Replace NULL with nullptr in all C++ files.

webrtc/modules/audio_coding/codecs/isac/main/test/SwitchingSampRate/SwitchingSampRate.cc

 /*
  *  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 80 matching lines @@
 
   // THE SECOND CLIENT STARTS IN SUPER-WIDEBAND
   encoderSampRate[1] = 32000;
   OPEN_FILE_RB(inFile[1], fileNameSWB);
 
   strcpy(myFlag, "-I");
   short codingMode = readSwitch(argc, argv, myFlag);
 
   for(clientCntr = 0; clientCntr < NUM_CLIENTS; clientCntr++)
   {
-    codecInstance[clientCntr] = NULL;
+    codecInstance[clientCntr] = nullptr;
 
     printf("\n");
     printf("Client %d\n", clientCntr + 1);
     printf("---------\n");
     printf("Starting %s",
            (encoderSampRate[clientCntr] == 16000)
            ? "wideband":"super-wideband");
 
     // Open output File Name
     OPEN_FILE_WB(outFile[clientCntr], outFileName[clientCntr]);
@@ skipping 16 matching lines @@
     // coding-mode
     printf("Encoding Mode.................... %s\n",
            (codingMode == 1)? "Channel-Independent (Instantaneous)":"Adaptive");
 
     lenEncodedInBytes[clientCntr] = 0;
     lenAudioIn10ms[clientCntr] = 0;
     lenEncodedInBytesTmp[clientCntr] = 0;
     lenAudioIn10msTmp[clientCntr] = 0;
 
     packetData[clientCntr] = (BottleNeckModel*)new(BottleNeckModel);
-    if(packetData[clientCntr] == NULL)
-    {
+    if (packetData[clientCntr] == nullptr) {
       printf("Could not allocate memory for packetData \n");
       return -1;
     }
     memset(packetData[clientCntr], 0, sizeof(BottleNeckModel));
     memset(resamplerState[clientCntr], 0, sizeof(int32_t) * 8);
   }
 
   for(clientCntr = 0; clientCntr < NUM_CLIENTS; clientCntr++)
   {
     // Create
@@ skipping 299 matching lines @@
             return -1;
           }
         }
         num10ms[senderIdx] = 0;
       }
       //}
       //}
     }
   }
 }