Modify hash_create() to elog(ERROR) if an error occurs, rather than

returning a NULL pointer (some callers remembered to check the return
value, but some did not -- it is safer to just bail out).

Also, cleanup pgstat.c to use elog(ERROR) rather than elog(LOG) followed
by exit().

src/backend/storage/lmgr/lock.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/storage/lmgr/lock.c,v 1.142 2004/09/29 15:15:55 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/storage/lmgr/lock.c,v 1.143 2004/10/25 00:46:41 neilc Exp $
  *
  * NOTES
  *	  Outside modules can create a lock table and acquire/release
@@ -335,9 +335,6 @@ LockMethodTableInit(const char *tabName,
 													&info,
 													hash_flags);
 
-	if (!LockMethodLocalHash[lockmethodid])
-		elog(FATAL, "could not initialize lock table \"%s\"", tabName);
-
 	pfree(shmemName);
 
 	return lockmethodid;