Fixed Clang warning
Fixed possible garbage value for secret in an error case
@@ -1580,7 +1580,7 @@ _libssh2_ecdh_gen_k(_libssh2_bn **k, _libssh2_ec_key *private_key,
int ret = 0;
int rc;
size_t secret_len;
- unsigned char *secret;
+ unsigned char *secret = NULL;
const EC_GROUP *private_key_group;
EC_POINT *server_public_key_point;
