message: Move inject_function method to protected.
diff: @@ -106,7 +106,6 @@ public:
  static long create(zend_fcall_info_cache *fci_cache, uint32_t argc, zval *argv);
  static void defer(php_swoole_fci *fci);
  - static bool inject_function();
  static bool enable_hook(int flags);
  static bool disable_hook();
  @@ -186,6 +185,8 @@ protected:
  task->last_msec = swTimer_get_absolute_msec();
  }
  }
  +
  + static bool inject_function();
  };
  }
  