message: fix synchronization for CPU trackers
diff: @@ -1294,7 +1294,7 @@ RestartTrackletConstructor:
  }
  }
  - for (int i = 0;i < fNHelperThreads;i++)
  + for (int i = 0;i < fNHelperThreads + fNCPUTrackers;i++)
  {
  pthread_mutex_lock(&((pthread_mutex_t*) fHelperParams[i].fMutex)[1]);
  }
  