Change signedness of hash in x509_get_sha1_hash(), fixes compiler warning.

hash was cast from char * to unsigned char * at the return of the function.
This patch removes the implicit cast by declaring hash as unsigned char * .

Signed-off-by: Steffan Karger <steffan@karger.me>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <1398585348-7969-1-git-send-email-steffan@karger.me>
URL: http://article.gmane.org/gmane.network.openvpn.devel/8647
Signed-off-by: Gert Doering <gert@greenie.muc.de>

diff --git a/src/openvpn/ssl_verify_openssl.c b/src/openvpn/ssl_verify_openssl.c
index a9205f315796726735225f85102c7a8f803e02ca..0f571d9ae12c79a483ce9461e390deb8603aed62 100644 (file)
--- a/src/openvpn/ssl_verify_openssl.c
+++ b/src/openvpn/ssl_verify_openssl.c
@@ -241,7 +241,7 @@ backend_x509_get_serial (openvpn_x509_cert_t *cert, struct gc_arena *gc)
 unsigned char *
 x509_get_sha1_hash (X509 *cert, struct gc_arena *gc)
 {
-  char *hash = gc_malloc(SHA_DIGEST_LENGTH, false, gc);
+  unsigned char *hash = gc_malloc(SHA_DIGEST_LENGTH, false, gc);
   memcpy(hash, cert->sha1_hash, SHA_DIGEST_LENGTH);
   return hash;
 }