Replace NULL with nullptr in all C++ files.

webrtc/modules/audio_coding/codecs/g722/test/testG722.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 71 matching lines @@
         printf("  G.722: Invalid framelength %d.\n", framelength_int);
         exit(1);
     }
     framelength = static_cast<size_t>(framelength_int);
 
     /* Get Input and Output files */
     sscanf(argv[2], "%s", inname);
     sscanf(argv[3], "%s", outbit);
     sscanf(argv[4], "%s", outname);
 
-    if ((inp = fopen(inname,"rb")) == NULL) {
-        printf("  G.722: Cannot read file %s.\n", inname);
-        exit(1);
+    if ((inp = fopen(inname, "rb")) == nullptr) {
+      printf("  G.722: Cannot read file %s.\n", inname);
+      exit(1);
     }
-    if ((outbitp = fopen(outbit,"wb")) == NULL) {
-        printf("  G.722: Cannot write file %s.\n", outbit);
-        exit(1);
+    if ((outbitp = fopen(outbit, "wb")) == nullptr) {
+      printf("  G.722: Cannot write file %s.\n", outbit);
+      exit(1);
     }
-    if ((outp = fopen(outname,"wb")) == NULL) {
-        printf("  G.722: Cannot write file %s.\n", outname);
-        exit(1);
+    if ((outp = fopen(outname, "wb")) == nullptr) {
+      printf("  G.722: Cannot write file %s.\n", outname);
+      exit(1);
     }
     printf("\nInput:%s\nOutput bitstream:%s\nOutput:%s\n", inname, outbit, outname);
 
     /* Create and init */
     WebRtcG722_CreateEncoder((G722EncInst **)&G722enc_inst);
     WebRtcG722_CreateDecoder((G722DecInst **)&G722dec_inst);
     WebRtcG722_EncoderInit((G722EncInst *)G722enc_inst);
     WebRtcG722_DecoderInit((G722DecInst *)G722dec_inst);
 
 
@@ skipping 36 matching lines @@
     printf("\n\nLength of speech file: %.1f s\n", length_file);
     printf("Time to run G.722:      %.2f s (%.2f %% of realtime)\n\n", runtime, (100*runtime/length_file));
     printf("---------------------END----------------------\n");
 
     fclose(inp);
     fclose(outbitp);
     fclose(outp);
 
     return 0;
 }