re PR fortran/80741 ([Regression 7/8] DTIO wrong code causes incorrect behaviour of namelist READ)

2017-05-17  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/80741
	* transfer.c (finalize_transfer): Reset last_char to 'empty'.
	* file_pos.c (formatted_backspace): Likewise.
	(st_endfile): Likewise.
	(st_rewind): Likewise.
	(st_flush): Likewise.

	PR fortran/80741
	* trans-io.c (transfer_namelist_element): Change check from
	NULL_TREE to null_pointer_node.

From-SVN: r248170