[PATCH] fwts_devicetree: clean up pedantic static analysis warning

[Colin King]

From: Colin Ian King <colin.king at canonical.com>

Coverity is warning that prop_len may be uninitialized and prop_buf
could be null in the fdt_getprop call. Not sure of these are false
positives, but clean up the warning by initializing prop_len to zero
and call strcmp on prop_buf only if it is not null.

Signed-off-by: Colin Ian King <colin.king at canonical.com>
---
 src/lib/src/fwts_devicetree.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/lib/src/fwts_devicetree.c b/src/lib/src/fwts_devicetree.c
index 6180f127..82c72000 100644
--- a/src/lib/src/fwts_devicetree.c
+++ b/src/lib/src/fwts_devicetree.c
@@ -76,7 +76,7 @@ bool check_status_property_okay(fwts_framework *fw,
 	char *prop_string = strstr(my_path, my_prop_string);
 
 	if (prop_string) {
-		int prop_len;
+		int prop_len = 0;
 		int node = fdt_path_offset(fw->fdt, prop_string);
 
 		if (node >= 0) {
@@ -85,7 +85,7 @@ bool check_status_property_okay(fwts_framework *fw,
 			prop_buf = fdt_getprop(fw->fdt, node,
 					property,
 					&prop_len);
-			if (prop_len > 0) {
+			if (prop_buf && (prop_len > 0)) {
 				if ((!strcmp(prop_buf, "okay")) ||
 					(!strcmp(prop_buf, "ok"))) {
 					return true;
-- 
2.30.2