1、fix uart dev_recv_callback not init error;2、fix app_test compile error.

APP_Framework/Framework/connection/zigbee/e18/e18.c

@@ -160,6 +160,7 @@ static int E18UartOpen(struct Adapter *adapter)
     cfg.ext_uart_no = ADAPTER_E18_DRIVER_EXT_PORT;
     cfg.port_configure = PORT_CFG_INIT;
 #endif
+    cfg.dev_recv_callback = NULL;
 
     struct PrivIoctlCfg ioctl_cfg;
     ioctl_cfg.ioctl_driver_type = SERIAL_TYPE;