Initialize error variable in ykd_init

Signed-off-by: Jan Friesse <jfriesse@redhat.com>
Reviewed-by: Fabio M. Di Nitto <fdinitto@redhat.com>

exec/vsf_ykd.c

@@ -512,7 +512,7 @@ char *ykd_init (
 	struct corosync_api_v1 *corosync_api,
 	quorum_set_quorate_fn_t set_primary)
 {
-	char *error;
+	const char *error = "";
 
 	ykd_primary_callback_fn = set_primary;
 	api = corosync_api;