fortran: Fix coding style around free()

Fix coding-style errors introduced in ca2f64d5

gcc/fortran/ChangeLog:

	* resolve.cc (resolve_select_type): Fix coding style.

libgfortran/ChangeLog:

	* caf/single.c (_gfortran_caf_register): Fix coding style.
	* io/async.c (update_pdt, async_io): Likewise.
	* io/format.c (free_format_data): Likewise.
	* io/transfer.c (st_read_done_worker, st_write_done_worker): Likewise.
	* io/unix.c (mem_close): Likewise.