Fix for gcc warnings
Fixes warnings treated as errors when upgrading gcc crate to 0.3.54.
Warnings are due to non-used variables and comparison between signed
and unsigned.
Signed-off-by: Fabio Utzig <utzig@apache.org>
diff --git a/boot/bootutil/src/image_rsa.c b/boot/bootutil/src/image_rsa.c
index 88ec784..4d4ab1f 100644
--- a/boot/bootutil/src/image_rsa.c
+++ b/boot/bootutil/src/image_rsa.c
@@ -268,7 +268,7 @@
end = cp + *bootutil_keys[key_id].len;
rc = bootutil_parse_rsakey(&ctx, &cp, end);
- if (rc || slen != ctx.len) {
+ if (rc || (size_t)slen != ctx.len) {
mbedtls_rsa_free(&ctx);
return rc;
}