talk: Use NDEBUG macro.

talk/session/media/srtpfilter.cc

 /*
  * libjingle
  * Copyright 2009 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 39 matching lines @@
 #include "srtp.h"  // NOLINT
 #include "srtp_priv.h"  // NOLINT
 #else
 #include "third_party/libsrtp/srtp/include/srtp.h"
 #include "third_party/libsrtp/srtp/include/srtp_priv.h"
 #endif  // SRTP_RELATIVE_PATH
 }
 #ifdef  ENABLE_EXTERNAL_AUTH
 #include "talk/session/media/externalhmac.h"
 #endif  // ENABLE_EXTERNAL_AUTH
-#ifdef _DEBUG
+#if !defined(NDEBUG)
 extern "C" debug_module_t mod_srtp;
 extern "C" debug_module_t mod_auth;
 extern "C" debug_module_t mod_cipher;
 extern "C" debug_module_t mod_stat;
 extern "C" debug_module_t mod_alloc;
 extern "C" debug_module_t mod_aes_icm;
 extern "C" debug_module_t mod_aes_hmac;
 #endif
 #else
 // SrtpFilter needs that constant.
@@ skipping 14 matching lines @@
 bool SrtpNotAvailable(const char *func) {
   LOG(LS_ERROR) << func << ": SRTP is not available on your system.";
   return false;
 }
 }  // anonymous namespace
 
 #endif  // !HAVE_SRTP
 
 void EnableSrtpDebugging() {
 #ifdef HAVE_SRTP
-#ifdef _DEBUG
+#if !defined(NDEBUG)
   debug_on(mod_srtp);
   debug_on(mod_auth);
   debug_on(mod_cipher);
   debug_on(mod_stat);
   debug_on(mod_alloc);
   debug_on(mod_aes_icm);
   // debug_on(mod_aes_cbc);
   // debug_on(mod_hmac);
 #endif
 #endif  // HAVE_SRTP
@@ skipping 836 matching lines @@
   SrtpNotAvailable(__FUNCTION__);
 }
 
 void SrtpStat::HandleSrtpResult(const SrtpStat::FailureKey& key) {
   SrtpNotAvailable(__FUNCTION__);
 }
 
 #endif  // HAVE_SRTP
 
 }  // namespace cricket