Fixed a typo breaking optional parameter supoort in AX.
Fixed a typo breaking optional parameter supoort in AX.

hutushen222/LightOpenID,7citylearning/lightopenid,pixnet/php-lightopenid,wheniwork/lightopenid,Mewp/lightopenid,iignatov/LightOpenID,notr1ch/lightopenid,jfoucher/lightopenid,soundasleep/lightopenid,kounta/lightopenid,dimka3210/LightOpenID