fix 修复 登录未选部门报空问题

ruoyi-system/src/main/java/com/ruoyi/system/service/SysLoginService.java

@@ -209,7 +209,7 @@ public class SysLoginService {
         loginUser.setUserType(user.getUserType());
         loginUser.setMenuPermission(permissionService.getMenuPermission(user));
         loginUser.setRolePermission(permissionService.getRolePermission(user));
-        loginUser.setDeptName(user.getDept().getDeptName());
+        loginUser.setDeptName(ObjectUtil.isNull(user.getDept()) ? "" : user.getDept().getDeptName());
         List<RoleDTO> roles = BeanUtil.copyToList(user.getRoles(), RoleDTO.class);
         loginUser.setRoles(roles);
         return loginUser;