Update web_service.py

python/paddle_serving_server/web_service.py

@@ -262,6 +262,7 @@ class WebService(object):
         self.runtime_thread_num = runtime_thread_num
         self.batch_infer_size = batch_infer_size
         
+        
         # record port and pid info for stopping process
         dump_pid_file([self.port], "web_service")
         # if gpuid != None, we will use gpuid first.