[PATCH] lib: fix compile error for debian + gcc 8.3

[Rebecca Cran]

On 1/15/21 11:18 AM, Alex Hung wrote:
> Fixes: ffea02df09d3 ("add fwts_acpi_space_id_check to check GAS ...")
> 
> Reported-by: Rebecca Cran <rebecca at nuviainc.com>
> Signed-off-by: Alex Hung <alex.hung at canonical.com>

Reviewed-by: Rebecca Cran <rebecca at nuviainc.com>