fix syntax-parameterize when RHS refers to LHS (PR 8383)
fix syntax-parameterize when RHS refers to LHS (PR 8383)

svn: r4830

mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket