fix: ci error with node-v13.6.0 on windows (#46)

Ref: nodejs/node#30556

Author: hyj1991

lib/xctl.js

@@ -101,8 +101,8 @@ async function createMessageConnection(pid, xprofilerPath, message) {
 
   message = JSON.stringify(message);
 
-  /* istanbul ignore if */
-  if (!fs.existsSync(xprofilerPath)) {
+  /* istanbul ignore next */
+  if (os.platform() !== 'win32' && !fs.existsSync(xprofilerPath)) {
     throw new Error(`进程 ${pid} 不存在或者没有启动 xprofiler 信令线程!`);
   }
 

src/logger.cc

@@ -25,7 +25,6 @@ using v8::String;
   uv_mutex_lock(&logger_mutex);                \
   type##_stream.open(filepath, std::ios::app); \
   type##_stream << log;                        \
-  type##_stream.flush();                       \
   type##_stream.close();                       \
   uv_mutex_unlock(&logger_mutex);