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

[Alex Hung]

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>
---
 src/lib/src/fwts_acpi_tables.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/lib/src/fwts_acpi_tables.c b/src/lib/src/fwts_acpi_tables.c
index d88d31e4..a42157be 100644
--- a/src/lib/src/fwts_acpi_tables.c
+++ b/src/lib/src/fwts_acpi_tables.c
@@ -1680,9 +1680,9 @@ void fwts_acpi_space_id_check(
 
 		strncat(must_be_id, get_space_id_name(must_be), strlen(get_space_id_name(must_be)));
 		if (i < num_type - 2)
-			strncat(must_be_id, ", ", 2);
+			strncat(must_be_id, ", ", 3);
 		else if (i == num_type - 2)
-			strncat(must_be_id, " or ", 4);
+			strncat(must_be_id, " or ", 5);
 	}
 
 	if (!matched) {
-- 
2.25.1