re PR libfortran/68987 (double free or corruption in _gfortran_st_write_done when a write statement to an internal file uses an invalid format and the ERR= specifier appears.)

2015-12-28  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libfortran/68987
	io/format.c (format_error): Remove unneeded memory cleanup.

From-SVN: r231989