Method PopDefer

core/utils/syscallthread.h:384–388

* Re-enables and takes any pending SIG_THREAD_EXIT after * pushing a defer. If you are on your way to exiting * there's no need to pop any pushes. */

   * there's no need to pop any pushes.
   */
  void PopDefer() {
    if (--defer_count_ == 0) {
      BlockSignals(false);
    }
  }

  /*
   * Indicates that we're on our way out of Run().