Call-time pass-by-reference

I just started using the $ezr->register_function but am noticing this error in my logs:

[client 169.232.XXX.XXX] PHP Warning: Call-time pass-by-reference has been deprecated - argument passed by value; If you would like to pass it by reference, modify the declaration of change_infraction(). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file. However, future versions may not support this any longer. in /home/maskeddomain.com/html/ez_results.php(329) : eval()'d code on line 1, referer: http://www.maskeddomain.com/admin/guest_parking.php?uid=1

Would anyone know how to fix this error, and have it stay fixed since the error says "future versions may not support this any longer"? The function is working fine right now, no problems otherwise...

Any help would be great...

Thanks,
Eugene