message: fix core_test errors
diff: @@ -4,7 +4,7 @@ using namespace swoole;
  static void coro1(void *arg)
  {
  - int cid = coroutine_get_cid();
  + int cid = coroutine_get_current_cid();
  coroutine_t *co = coroutine_get_by_id(cid);
  coroutine_yield(co);
  }
  