Avoid useless loop overhead in AtEOXact routines when the backend is

compiled with USE_ASSERT_CHECKING but is running with assert_enabled false.

src/backend/storage/buffer/bufmgr.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/storage/buffer/bufmgr.c,v 1.191 2005/08/08 03:11:44 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/storage/buffer/bufmgr.c,v 1.192 2005/08/08 19:44:22 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -1067,15 +1067,18 @@ void
 AtEOXact_Buffers(bool isCommit)
 {
 #ifdef USE_ASSERT_CHECKING
+	if (assert_enabled)
+	{
 		int			i;
 
 		for (i = 0; i < NBuffers; i++)
 		{
 			Assert(PrivateRefCount[i] == 0);
 		}
+	}
+#endif
 
 	AtEOXact_LocalBuffers(isCommit);
-#endif
 
 	/* Make sure we reset the strategy hint in case VACUUM errored out */
 	StrategyHintVacuum(false);

src/backend/storage/buffer/localbuf.c

@@ -9,7 +9,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/storage/buffer/localbuf.c,v 1.67 2005/05/29 04:23:04 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/storage/buffer/localbuf.c,v 1.68 2005/08/08 19:44:22 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -308,12 +308,15 @@ void
 AtEOXact_LocalBuffers(bool isCommit)
 {
 #ifdef USE_ASSERT_CHECKING
+	if (assert_enabled)
+	{
 		int			i;
 
 		for (i = 0; i < NLocBuffer; i++)
 		{
 			Assert(LocalRefCount[i] == 0);
 		}
+	}
 #endif
 }