Even though SO_PEERCRED is probably totally unportable, might as well

declare the getsockopt parameter as ACCEPT_TYPE_ARG3 to be consistent
with our other uses of getsockopt.

src/backend/libpq/hba.c

@@ -10,7 +10,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/libpq/hba.c,v 1.60 2001/08/02 14:27:40 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/libpq/hba.c,v 1.61 2001/08/02 14:39:35 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -863,11 +863,10 @@ ident_unix(int sock, char *ident_user)
 #ifdef SO_PEERCRED
 	/* Linux style: use getsockopt(SO_PEERCRED) */
 	struct ucred	peercred;
-	socklen_t		so_len;
+	ACCEPT_TYPE_ARG3 so_len = sizeof(peercred);
 	struct passwd *pass;
 
 	errno = 0;
-	so_len = sizeof(peercred);
 	if (getsockopt(sock, SOL_SOCKET, SO_PEERCRED, &peercred, &so_len) != 0 ||
 		so_len != sizeof(peercred))
 	{