fix: During a BSD/OS(BSDI) 2.1 compile, I got errors about undefined

S_LOCK_'s during the postgres link phase.

submitted by: Bruce Momjian (root@candle.pha.pa.us)

src/backend/storage/ipc/s_lock.c

@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *    $Header: /cvsroot/pgsql/src/backend/storage/ipc/Attic/s_lock.c,v 1.1.1.1 1996/07/09 06:21:54 scrappy Exp $
+ *    $Header: /cvsroot/pgsql/src/backend/storage/ipc/Attic/s_lock.c,v 1.2 1996/07/16 06:53:41 scrappy Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -381,7 +381,7 @@ S_INIT_LOCK(unsigned char *addr)
  * Linux and friends
  */
 
-#if defined(PORTNAME_linux) || defined(PORTNAME_BSD44_derived)
+#if defined(PORTNAME_linux) || defined(PORTNAME_BSD44_derived) || defined(PORTNAME_bsdi)
 
 int
 tas(slock_t *m)