完善登出功能，记录日志

src/main/java/cn/iocoder/dashboard/modules/system/service/auth/impl/SysAuthServiceImpl.java

@@ -162,7 +162,9 @@ public class SysAuthServiceImpl implements SysAuthService {
     public void logout(String token) {
         // 查询用户信息
         LoginUser loginUser = userSessionService.getLoginUser(token);
-        if(loginUser == null) return;
+        if(loginUser == null) {
+            return;
+        }
         // 删除session
         userSessionService.deleteUserSession(token);
         this.createLogoutLog(loginUser.getUsername(), SysLoginResultEnum.SUCCESS);