Fixed Notices in main.php on line 104

Notice: Undefined variable: killer in /home/aniki/phpbot/main.php on
line 104
Notice: Undefined index:  in /home/aniki/phpbot/main.php on
line 104
Fixed Notices in head.php on line 29

Notice: Undefined variable: killer in
/home/aniki/phpbot/plugins/head.php on line 29
Notice: Undefined index:
in /home/aniki/phpbot/plugins/head.php on line 29