Changes croissants to reagent defines.
requested to merge pull/13477/you_people_spent_all_night_chatting_about_how_shit_byond_is_instead_of_making_a_3_second_fix into Bleeding-Edge
Created by: Probe1
Resolves https://github.com/d3athrow/vgstation13/pull/13430#issuecomment-272665363