Fix all remaining warnings (missing declarations, missing prototypes)
diff --git a/iptables-standalone.c b/iptables-standalone.c
index e5c7841..55c7ce9 100644
--- a/iptables-standalone.c
+++ b/iptables-standalone.c
@@ -36,6 +36,7 @@
 #include <errno.h>
 #include <string.h>
 #include <iptables.h>
+#include "iptables-multi.h"
 
 #ifdef IPTABLES_MULTI
 int