treewide: Add include guards

...at the moment, just for consistency with packet.h, icmp.h,
tcp.h and udp.h.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/pcap.h b/pcap.h
index 73b5ed8..e951b2f 100644
--- a/pcap.h
+++ b/pcap.h
@@ -3,7 +3,12 @@
  * Author: Stefano Brivio <sbrivio@redhat.com>
  */
 
+#ifndef PCAP_H
+#define PCAP_H
+
 void pcap(char *pkt, size_t len);
 void pcapm(struct msghdr *mh);
 void pcapmm(struct mmsghdr *mmh, unsigned int vlen);
 void pcap_init(struct ctx *c);
+
+#endif /* PCAP_H */