Switch usage of _DEBUG macro to NDEBUG.

webrtc/modules/rtp_rtcp/source/rtp_utility.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.
  */
 
 #include "webrtc/modules/rtp_rtcp/source/rtp_utility.h"
 
 #include <assert.h>
 #include <math.h>  // ceil
 #include <string.h>  // memcpy
 
 #if defined(_WIN32)
 // Order for these headers are important
 #include <winsock2.h>  // timeval
 #include <windows.h>  // FILETIME
 #include <MMSystem.h>  // timeGetTime
 #elif ((defined WEBRTC_LINUX) || (defined WEBRTC_MAC))
 #include <sys/time.h>  // gettimeofday
 #include <time.h>
 #endif
-#if (defined(_DEBUG) && defined(_WIN32) && (_MSC_VER >= 1400))
+#if (!defined(NDEBUG) && defined(_WIN32) && (_MSC_VER >= 1400))
 #include <stdio.h>
 #endif
 
 #include "webrtc/base/logging.h"
 #include "webrtc/modules/rtp_rtcp/source/byte_io.h"
 #include "webrtc/system_wrappers/include/tick_util.h"
 
-#if (defined(_DEBUG) && defined(_WIN32) && (_MSC_VER >= 1400))
+#if (!defined(NDEBUG) && defined(_WIN32) && (_MSC_VER >= 1400))
 #define DEBUG_PRINT(...)           \
   {                                \
     char msg[256];                 \
     sprintf(msg, __VA_ARGS__);     \
     OutputDebugString(msg);        \
   }
 #else
 // special fix for visual 2003
 #define DEBUG_PRINT(exp)        ((void)0)
-#endif  // defined(_DEBUG) && defined(_WIN32)
+#endif  // !defined(NDEBUG) && defined(_WIN32)
 
 namespace webrtc {
 
 RtpData* NullObjectRtpData() {
   static NullRtpData null_rtp_data;
   return &null_rtp_data;
 }
 
 RtpFeedback* NullObjectRtpFeedback() {
   static NullRtpFeedback null_rtp_feedback;
@@ skipping 442 matching lines @@
       return num_zero_bytes;
     }
     ptr++;
     num_zero_bytes++;
   }
   return num_zero_bytes;
 }
 }  // namespace RtpUtility
 
 }  // namespace webrtc