Merge remote-tracking branch 'kevin/issue/optimize-lock-table' into features_prs/develop-next

include/class.cron.php

@@ -61,7 +61,7 @@ class Cron {
         $chance = rand(1,2000);
         switch ($chance) {
         case 42:
-            @db_query('OPTIMIZE TABLE '.LOCK_TABLE);
+            @db_query('OPTIMIZE TABLE `'.LOCK_TABLE.'`');
             break;
         case 242:
             @db_query('OPTIMIZE TABLE '.SYSLOG_TABLE);