gcase() clean up
gcase() clean up

remove tail recursion, simplify

code4game/tinycc,mingodad/tinycc,metaeducation/tcc,avih/tinycc,andreiw/tinycc,mirror/tinycc,run4flat/tinycc,metaeducation/tcc,andreiw/tinycc,andreiw/tinycc,mingodad/tinycc,run4flat/tinycc,code4game/tinycc,mirror/tinycc,metaeducation/tcc,avih/tinycc,avih/tinycc,mingodad/tinycc,metaeducation/tcc,mirror/tinycc,run4flat/tinycc,run4flat/tinycc,mingodad/tinycc,avih/tinycc,run4flat/tinycc,code4game/tinycc,mirror/tinycc,metaeducation/tcc