trivial fix in fd.c

Fix a format warning in fd.c when FDDEBUG is on.

By the way (to save a thread): What's the rationale of designing resowner
APIs like this:

ResourceOwnerEnlargeABC();
ResourceOwnerRememberABC();

Is that because sometimes we don't allow any elog in
ResourceOwnerRememberABC()?

Regards,
Qingqing

Index: fd.c
===================================================================
RCS file: /projects/cvsroot/pgsql/src/backend/storage/file/fd.c,v
retrieving revision 1.127
diff -c -r1.127 fd.c
*** fd.c 5 Mar 2006 15:58:37 -0000 1.127
--- fd.c 22 May 2006 08:00:42 -0000
***************
*** 649,655 ****
Index i;
File file;

! DO_DB(elog(LOG, "AllocateVfd. Size %d", SizeVfdCache));

Assert(SizeVfdCache > 0); /* InitFileAccess not called? */

--- 649,655 ----
Index i;
File file;

! DO_DB(elog(LOG, "AllocateVfd. Size %lu", SizeVfdCache));

Assert(SizeVfdCache > 0); /* InitFileAccess not called? */