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/nlpid.c b/nlpid.c
index 14efb0b1..4b44ee1c 100644
--- a/nlpid.c
+++ b/nlpid.c
@@ -18,7 +18,7 @@
 #endif
 
 #include <netdissect-stdinc.h>
-#include "interface.h"
+#include "netdissect.h"
 #include "nlpid.h"
 
 const struct tok nlpid_values[] = {