libnetdissect code must include 'netdissect.h', not 'interface.h'

Moreover:
Remove netdissect.h include in interface.h
Move thiszone declaration in netdissect.h
Update a comment

1 files changed, 1 insertions, 1 deletions

diff --git a/af.c b/af.c
index cfa0648e..539ede52 100644
--- a/af.c
+++ b/af.c
@@ -20,7 +20,7 @@
 #endif
 
 #include <netdissect-stdinc.h>
-#include "interface.h"
+#include "netdissect.h"
 #include "af.h"
 
 const struct tok af_values[] = {