[XFRM] Fix spurious error with get_*

[Herbert Xu <herbert@gondor.apana.org.au>]

Hi:

The various XFRM messages that return information generate spurious
NLMSG_ERROR messages.  This patch fixes that.
-- 
Debian GNU/Linux 3.0 is out! ( http://www.debian.org/ )
Email:  Herbert Xu ~{PmV>HI~} <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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Index: kernel-source-2.5/net/xfrm/xfrm_user.c
===================================================================
RCS file: /home/gondolin/herbert/src/CVS/debian/kernel-source-2.5/net/xfrm/xfrm_user.c,v
retrieving revision 1.11
diff -u -r1.11 xfrm_user.c
--- kernel-source-2.5/net/xfrm/xfrm_user.c	29 Jul 2003 11:11:34 -0000	1.11
+++ kernel-source-2.5/net/xfrm/xfrm_user.c	3 Aug 2003 00:21:14 -0000
@@ -937,7 +937,7 @@
 		rlen = NLMSG_ALIGN(nlh->nlmsg_len);
 		if (rlen > skb->len)
 			rlen = skb->len;
-		if (xfrm_user_rcv_msg(skb, nlh, &err)) {
+		if (xfrm_user_rcv_msg(skb, nlh, &err) < 0) {
 			if (err == 0)
 				return -1;
 			netlink_ack(skb, nlh, err);