Don't subtract from pre_length twice.
Don't subtract from pre_length twice.

Fixes failures on BIN reported by Matthieu Nottale.

	* src/parser/utoken.l (UNPUT): Don't adjust pre_length again, as
	COLUMNS already did.

aldebaran/urbi,urbiforge/urbi,aldebaran/urbi,urbiforge/urbi,aldebaran/urbi,urbiforge/urbi,aldebaran/urbi,aldebaran/urbi,urbiforge/urbi,urbiforge/urbi,aldebaran/urbi,urbiforge/urbi,urbiforge/urbi,urbiforge/urbi,aldebaran/urbi,urbiforge/urbi,aldebaran/urbi