Fixes various warnings on clang 9.0

src/network/slirp/ip.h

@@ -209,7 +209,7 @@ typedef u_int32_t caddr32_t;
 #endif
 #endif
 
-#ifdef __amd64__
+#if defined(__amd64__) || defined(__aarch64__)
 typedef uintptr_t ipqp_32;
 typedef uintptr_t ipasfragp_32;
 #else
@@ -230,7 +230,7 @@ typedef caddr32_t ipasfragp_32;
 #endif
 
 struct ipovly {
-#ifdef __amd64__
+#if defined(__amd64__) || defined(__aarch64__)
 	uintptr_t	ih_next, ih_prev;	/* for protocol sequence q's */
 #else
 	caddr32_t	ih_next, ih_prev;	/* for protocol sequence q's */
@@ -258,7 +258,7 @@ struct ipovly {
  * size 28 bytes
  */
 struct ipq {
-#ifdef __amd64__
+#if defined(__amd64__) || defined(__aarch64__)
 	uintptr_t next,prev;	/* to other reass headers */
 #else
 	ipqp_32 next,prev;	/* to other reass headers */

src/network/slirp/tcp.h

@@ -33,7 +33,7 @@
 #ifndef _TCP_H_
 #define _TCP_H_
 
-#ifdef __amd64__
+#if defined(__amd64__) || defined(__aarch64__)
 typedef	uintptr_t	tcp_seq;
 #else
 typedef	u_int32_t	tcp_seq;

src/network/slirp/tcp_var.h

@@ -36,7 +36,7 @@
 #include "tcpip.h"
 #include "tcp_timer.h"
 
-#ifdef __amd64__
+#if defined(__amd64__) || defined(__aarch64__)
 typedef uintptr_t tcpiphdrp_32;
 #else
 #if SIZEOF_CHAR_P == 4
@@ -178,7 +178,7 @@ struct tcpcb {
  * port numbers (which are no longer needed once we've located the
  * tcpcb) are overlayed with an mbuf pointer.
  */
-#ifdef __amd64__
+#if defined(__amd64__) || defined(__aarch64__)
 typedef uintptr_t mbufp_32;
 #else
 #if SIZEOF_CHAR_P == 4