高配未定义返回，导致编译不过。

pro/upgrade/upgrade.c

@@ -581,9 +581,10 @@ static int app_stop(void)
     LOGD("____ app_stop\n");
 #if (CHIP_TYPE == CHIP_T113i) 
     system("killall smartMonitor.sh; /etc/init.d/S90PDUApp stop");
-    ret = system("echo \"V\" > /dev/watchdog");
+    int ret = system("echo \"V\" > /dev/watchdog");
     sleep(1);
     ret = system("echo \"V\" > /dev/watchdog");
+    return ret;
 #else
     LOGD("app_stop  T113 S3\n");
     int ret = system("killall sh snmpd Qt_Test smartPDU");