Merge branch '0217-1' into 'yhkylin/v101'

fopen释放问题

See merge request kylinos-src/kylin-nm!113

src/frontend/tab-pages/tabpage.cpp

@@ -226,6 +226,9 @@ int TabPage::getCurrentLoadRate(QString dev, long *save_rate, long *tx_rate)
         }
     }
 
+    fclose(net_dev_file);
+    net_dev_file = nullptr;
+
     return 0; //返回成功
 }