Method endCheckCallback

lib/internal/http2/core.js:2310–2314

(err)

      done();
    };
    const endCheckCallback = (err) => {
      waitingForEndCheck = false;
      endCheckCallbackErr = err;
      done();
    };
    // Shutdown write stream right after last chunk is sent
    // so final DATA frame can include END_STREAM flag
    process.nextTick(() => {