blobmsg: make blobmsg_len and blobmsg_data_len return unsigned value

One usually doesn't guard against negative length values in the code.

Signed-off-by: Petr Štetiar <ynezz@true.cz>

1 files changed, 2 insertions, 1 deletions

diff --git a/blobmsg.c b/blobmsg.c
index 97e0c20..1a8b783 100644
--- a/blobmsg.c
+++ b/blobmsg.c
@@ -35,7 +35,8 @@ bool blobmsg_check_attr(const struct blob_attr *attr, bool name)
 {
 	const struct blobmsg_hdr *hdr;
 	const char *data;
-	int id, len;
+	size_t len;
+	int id;
 
 	if (blob_len(attr) < sizeof(struct blobmsg_hdr))
 		return false;