Simplify Maybe fix for SYB generics
Simplify Maybe fix for SYB generics

dmjio/aeson,jkarni/aeson,abbradar/aeson,roelvandijk/aeson,bwo/aeson,SeanRBurton/aeson,timmytofu/aeson,JPMoresmau/aeson,neobrain/aeson,roelvandijk/aeson,nurpax/aeson,aelve/json-x,sol/aeson,lykahb/aeson,neobrain/aeson,sol/aeson,sol/aeson,beni55/aeson,23Skidoo/aeson,plaprade/aeson