slirp: Common lhost/fhost union

The socket structure has a pair of unions for lhost and fhost
addresses; the unions are identical so split them out into
a separate union declaration.
Signed-off-by: NDr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: NJuan Quintela <quintela@redhat.com>
Signed-off-by: NSamuel Thibault <samuel.thibault@ens-lyon.org>

slirp/socket.h

@@ -15,6 +15,12 @@
  * Our socket structure
  */
 
+union slirp_sockaddr {
+    struct sockaddr_storage ss;
+    struct sockaddr_in sin;
+    struct sockaddr_in6 sin6;
+};
+
 struct socket {
   struct socket *so_next,*so_prev;      /* For a linked list of sockets */
 
@@ -31,22 +37,14 @@ struct socket {
   struct tcpiphdr *so_ti;	   /* Pointer to the original ti within
 				    * so_mconn, for non-blocking connections */
   int so_urgc;
-  union {   /* foreign host */
-      struct sockaddr_storage ss;
-      struct sockaddr_in sin;
-      struct sockaddr_in6 sin6;
-  } fhost;
+  union slirp_sockaddr fhost;      /* Foreign host */
 #define so_faddr fhost.sin.sin_addr
 #define so_fport fhost.sin.sin_port
 #define so_faddr6 fhost.sin6.sin6_addr
 #define so_fport6 fhost.sin6.sin6_port
 #define so_ffamily fhost.ss.ss_family
 
-  union {   /* local host */
-      struct sockaddr_storage ss;
-      struct sockaddr_in sin;
-      struct sockaddr_in6 sin6;
-  } lhost;
+  union slirp_sockaddr lhost;      /* Local host */
 #define so_laddr lhost.sin.sin_addr
 #define so_lport lhost.sin.sin_port
 #define so_laddr6 lhost.sin6.sin6_addr