[PATCH] lib: fwts_acpi_table: fix fwts_acpi_reserved_zero_array with the input string

[Ivan Hu]

BugLink: https://bugs.launchpad.net/fwts/+bug/2038278

Got below defects for Coverity Scan whec MPAM test calling
fwts_acpi_reserved_zero_array,

CID 1521581: (STRING_NULL)
Calling "fwts_acpi_reserved_zero_array" with the input string ""MPAM"",
which is greater than or equal to 4 in length, or not null-terminated.

Fix it without function changed.

Signed-off-by: Ivan Hu <ivan.hu 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 377b9676..fbab323f 100644
--- a/src/lib/src/fwts_acpi_tables.c
+++ b/src/lib/src/fwts_acpi_tables.c
@@ -1485,8 +1485,8 @@ void fwts_acpi_reserved_zero_array(
 	char label[20];
 	uint8_t i;
 
-	strncpy(label + 4, "ReservedNonZero", sizeof(label) - 4);
-	strncpy(label, table, 4);	/* ACPI table name is 4 char long */
+	strncpy(label, table, sizeof(label) - 1);
+	strcat(label, "ReservedNonZero");
 
 	for (i = 0; i < length; i++)
 		value += data[i];
-- 
2.34.1