util.hashes: Silence compiler warning about pointer signedness

diff --git a/util-src/hashes.c b/util-src/hashes.c
index ad25c1a7c0758996f2ffe88f0185df76d9cc5412..33041e83bdb8929f3673d860a408a3e89b22c064 100644 (file)
--- a/util-src/hashes.c
+++ b/util-src/hashes.c
@@ -79,7 +79,7 @@ static void hmac(struct hash_desc *desc, const char *key, size_t key_len,
        };
 
        int i;
-       char hashedKey[64]; /* Maximum used digest length */
+       unsigned char hashedKey[64]; /* Maximum used digest length */
        union xory k_ipad, k_opad;
 
        if (key_len > 64) {