--- previous/src/slirp/if.c	2018/04/24 19:32:36	1.1.1.2
+++ previous/src/slirp/if.c	2018/04/24 19:34:26	1.1.1.3
@@ -20,9 +20,8 @@ struct	mbuf *next_m;			/* Pointer to nex
 
 #define ifs_init(ifm) ((ifm)->ifs_next = (ifm)->ifs_prev = (ifm))
 
-void
-ifs_insque(ifm, ifmhead)
-	struct mbuf *ifm, *ifmhead;
+static void
+ifs_insque(struct mbuf *ifm, struct mbuf *ifmhead)
 {
 	ifm->ifs_next = ifmhead->ifs_next;
 	ifmhead->ifs_next = ifm;
@@ -30,10 +29,8 @@ ifs_insque(ifm, ifmhead)
 	ifm->ifs_next->ifs_prev = ifm;
 }
 
-void
-ifs_remque(ifm)
-	struct mbuf *ifm;
-{
+static void
+ifs_remque(struct mbuf *ifm) {
 	ifm->ifs_prev->ifs_next = ifm->ifs_next;
 	ifm->ifs_next->ifs_prev = ifm->ifs_prev;
 }