netlink: Don't signify error code

The netlink layer reports negative error code so no need to
signify it.

[xemul: This is what we do for the rest of the nlk code.]
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

libnetlink.c

@@ -50,7 +50,7 @@ static int nlmsg_receive(char *buf, int len, int (*cb)(struct nlmsghdr *, void *
 			if (err->error == 0)
 				return 0;
 
-			pr_err("ERROR %d reported by netlink\n", -err->error);
+			pr_err("ERROR %d reported by netlink\n", err->error);
 			return -1;
 		}
 		if (cb(hdr, arg))