Merge tsmith@bk-internal.mysql.com:/home/bk/mysql-5.0-maint

into  siva.hindu.god:/home/tsmith/m/bk/maint/50

libmysql/libmysql.c

@@ -1367,7 +1367,7 @@ mysql_stat(MYSQL *mysql)
 {
   DBUG_ENTER("mysql_stat");
   if (simple_command(mysql,COM_STATISTICS,0,0,0))
-    return mysql->net.last_error;
+    DBUG_RETURN(mysql->net.last_error);
   DBUG_RETURN((*mysql->methods->read_statistics)(mysql));
 }
 

sql/sql_class.cc

@@ -226,7 +226,9 @@ THD::THD()
 #endif
   client_capabilities= 0;                       // minimalistic client
   net.last_error[0]=0;                          // If error on boot
+#ifdef HAVE_QUERY_CACHE
   query_cache_init_query(&net);                 // If error on boot
+#endif
   ull=0;
   system_thread= cleanup_done= abort_on_warning= no_warnings_for_error= 0;
   peer_port= 0;					// For SHOW PROCESSLIST