LANGUAGE pragma parser nit

Language pragmas like

{-# LANGUAGE 
    TypeOperators,
    FlexibleContexts #-}

or

{-# LANGUAGE 
    TypeOperators,
    FlexibleContexts
  #-}

parse just fine but

{-# LANGUAGE 
    TypeOperators,
    FlexibleContexts
#-}

doesn't (note the missing spaces before the closing #-}), saying:

    Cannot parse LANGUAGE pragma
    Expecting comma-separated list of language options,
    each starting with a capital letter

An OPTIONS_GHC pragma, on the other hand, accepts either format without complaint.