Fix Json.customDecoder
Fix Json.customDecoder

alexiamcdonald/elm-core,isaacsanders/core,slava-sh/core,martinos/core,avh4/elm-lang-core,maxsnew/core,manleyjster/core,Dandandan/core,eeue56/core,colinmccabe/core,simonh1000/core,Pisys/core,martinos/core,laszlopandy/core,rgrempel/core,Pisys/core,bradurani/core,deadfoxygrandpa/core,bradurani/core,suryagaddipati/core,vilterp/core,avh4/elm-lang-core,alexiamcdonald/elm-core,ThomasWeiser/core,laszlopandy/core,simonh1000/core,suryagaddipati/core,rick68/core,vilterp/core,rick68/core,manleyjster/core,krisajenkins/core,eeue56/core,deadfoxygrandpa/core,krisajenkins/core,ThomasWeiser/core,Dandandan/core,rgrempel/core,isaacsanders/core,colinmccabe/core