netfilter: fix include guards.

nf_conntrack_labels.h has no include guard.  Add it.

The comment following the #endif in the nf_flow_table.h include guard
referred to the wrong macro.  Fix it.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

include/net/netfilter/nf_conntrack_labels.h

 /* SPDX-License-Identifier: GPL-2.0 */
-#include <linux/types.h>
-#include <net/net_namespace.h>
+
+#ifndef _NF_CONNTRACK_LABELS_H
+#define _NF_CONNTRACK_LABELS_H
+
 #include <linux/netfilter/nf_conntrack_common.h>
 #include <linux/netfilter/nf_conntrack_tuple_common.h>
+#include <linux/types.h>
+#include <net/net_namespace.h>
 #include <net/netfilter/nf_conntrack.h>
 #include <net/netfilter/nf_conntrack_extend.h>
-
 #include <uapi/linux/netfilter/xt_connlabel.h>
 
 #define NF_CT_LABELS_MAX_SIZE ((XT_CONNLABEL_MAXBIT + 1) / BITS_PER_BYTE)
@@ -51,3 +54,5 @@ static inline void nf_conntrack_labels_fini(void) {}
 static inline int nf_connlabels_get(struct net *net, unsigned int bit) { return 0; }
 static inline void nf_connlabels_put(struct net *net) {}
 #endif
+
+#endif /* _NF_CONNTRACK_LABELS_H */

include/net/netfilter/nf_flow_table.h

@@ -127,4 +127,4 @@ unsigned int nf_flow_offload_ipv6_hook(void *priv, struct sk_buff *skb,
 #define MODULE_ALIAS_NF_FLOWTABLE(family)	\
 	MODULE_ALIAS("nf-flowtable-" __stringify(family))
 
-#endif /* _FLOW_OFFLOAD_H */
+#endif /* _NF_FLOW_TABLE_H */