message: Fix the -Wunused-function warning properly (MachProcess.mm)
  r319938 was not NFC, because it got the preprocessor guard wrong. Check
  WITH_FBS and WITH_BKS before defining SplitEventData.
diff: @@ -190,7 +190,7 @@ static bool CallBoardSystemServiceOpenApplication(NSString *bundleIDNSStr,
  }
  #endif
  -#if defined(WITH_FBS) || defined(WITH_FBS)
  +#if defined(WITH_BKS) || defined(WITH_FBS)
  static void SplitEventData(const char *data, std::vector<std::string> &elements)
  {
  elements.clear();
  