Make sure BODY is initialized before we use it and make sure the specified
q_disc supports option parsing before calling parse_qopt()

http://bugs.gentoo.org/108307

--- tc/tc.c
+++ tc/tc.c
@@ -38,7 +38,7 @@
 int force = 0;
 struct rtnl_handle rth;
 
-static void *BODY;	/* cached handle dlopen(NULL) */
+static void *BODY = NULL;	/* cached handle dlopen(NULL) */
 static struct qdisc_util * qdisc_list;
 static struct filter_util * filter_list;
 
--- tc/tc_qdisc.c
+++ tc/tc_qdisc.c
@@ -126,6 +126,10 @@
 		addattr_l(&req.n, sizeof(req), TCA_RATE, &est, sizeof(est));
 
 	if (q) {
+		if (!q->parse_qopt) {
+			fprintf(stderr, "qdisc '%s' does not support option parsing\n", k);
+			return -1;
+		}
 		if (q->parse_qopt(q, argc, argv, &req.n))
 			return 1;
 	} else {