Include unistd.h to get read/write function declarations.

Remove unused variable addrLen.

src/backend/libpq/pqpacket.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/libpq/Attic/pqpacket.c,v 1.10 1997/11/10 05:16:00 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/libpq/Attic/pqpacket.c,v 1.11 1997/11/17 16:18:07 thomas Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -37,6 +37,7 @@
  *
  */
 #include <stdio.h>
+#include <unistd.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netdb.h>
@@ -65,7 +66,6 @@ PacketReceive(Port *port,		/* receive port */
 	PacketLen	cc;				/* character count -- bytes recvd */
 	PacketLen	packetLen;		/* remaining packet chars to read */
 	Addr		tmp;			/* curr recv buf pointer */
-	int			addrLen = sizeof(struct sockaddr_in);
 	int			hdrLen;
 	int			flag;
 	int			decr;