--- Libnet-1.0.2a/src/libnet_link_sockpacket.c~	2001-01-07 18:53:44 +0000
+++ Libnet-1.0.2a/src/libnet_link_sockpacket.c	2003-08-21 11:01:17 +0000
@@ -167,14 +167,9 @@ bad:
 int
 libnet_close_link_interface(struct libnet_link_int *l)
 {
-    if (close(l->fd) == 0)
-    {
-        return (1);
-    }
-    else
-    {
-        return (-1);
-    }
+    int rv = close(l->fd);
+    free(l);
+    return rv ? -1 : 1;
 }