tools: kwbimage: Check the return value of image_headersz_v1()
Function image_headersz_v1() may return zero on fatal errors.
In this case the function already printed an error message.
Check the return value of image_headersz_v1() in kwbimage_generate(),
and exit on zero value with EXIT_FAILURE.
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/tools/kwbimage.c b/tools/kwbimage.c
index c0f1bda..a5b518f 100644
--- a/tools/kwbimage.c
+++ b/tools/kwbimage.c
@@ -2029,6 +2029,10 @@
case 1:
alloc_len = image_headersz_v1(NULL);
+ if (!alloc_len) {
+ free(image_cfg);
+ exit(EXIT_FAILURE);
+ }
break;
default: