Fix build on FreeBSD 4.11

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@7089 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_iax2.c

@@ -30,10 +30,10 @@
 #include <stdio.h>
 #include <sys/types.h>
 #include <sys/mman.h>
-#include <arpa/inet.h>
 #include <dirent.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <arpa/inet.h>
 #include <netinet/in_systm.h>
 #include <netinet/ip.h>
 #include <sys/time.h>