Fixed REPL crasher.
Fixed REPL crasher.

clhodapp/shapeless,wheaties/shapeless,notxcain/shapeless,Atry/shapeless,fthomas/shapeless,TomasMikula/shapeless,malcolmgreaves/shapeless,khronnuz/shapeless,alexarchambault/shapeless,joescii/shapeless,milessabin/shapeless,isaka/shapeless,tek/shapeless,roberth/shapeless,lambdista/shapeless,triggerNZ/shapeless,liff/shapeless,lukasz-golebiewski/shapeless