[NETLINK]: Use nlmsg_trim() where appropriate

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/cls_rsvp.c b/net/sched/cls_rsvp.c
index 1d4a1fb..0a683c0 100644
--- a/net/sched/cls_rsvp.c
+++ b/net/sched/cls_rsvp.c
@@ -31,6 +31,7 @@
 #include <net/route.h>
 #include <linux/skbuff.h>
 #include <net/sock.h>
+#include <net/netlink.h>
 #include <net/act_api.h>
 #include <net/pkt_cls.h>