[PATCH master 3/4] scripts: kwbimage: check return value of asprintf

[Ahmad Fatoum <ahmad@a3f.at>]

Some newer toolchains defines asprintf with a must_check attribute,
leading to warnings when compiling kwbimage. Let's handle OOM gracefully
to get rid of the warnings.

Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
---
 scripts/kwbimage.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/scripts/kwbimage.c b/scripts/kwbimage.c
index f9d052752d79..370c54c983b5 100644
--- a/scripts/kwbimage.c
+++ b/scripts/kwbimage.c
@@ -1006,6 +1006,7 @@ static int image_create_config_parse_oneline(char *line,
 					     char *configpath)
 {
 	char *keyword, *saveptr;
+	int ret;
 
 	keyword = strtok_r(line, " ", &saveptr);
 	if (!strcmp(keyword, "VERSION")) {
@@ -1056,10 +1057,16 @@ static int image_create_config_parse_oneline(char *line,
 		int argi = 0;
 
 		el->type = IMAGE_CFG_BINARY;
-		if (*value == '/')
+		if (*value == '/') {
 			el->binary.file = strdup(value);
-		else
-			asprintf(&el->binary.file, "%s/%s", configpath, value);
+		} else {
+			ret = asprintf(&el->binary.file, "%s/%s", configpath, value);
+			if (ret < 0) {
+				fprintf(stderr, "Cannot allocate memory\n");
+				return -1;
+			}
+		}
+
 		while (1) {
 			value = strtok_r(NULL, " ", &saveptr);
 			if (!value)
-- 
2.38.4