Don't use the contract pretty printer when we try to see if we can single line the contract error.
Don't use the contract pretty printer when we try to see if we can single
line the contract error.

svn: r12766

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