Simplification within reorg.c

Simplification within reorg.c

gcc/ChangeLog:
2014-09-05  David Malcolm  <dmalcolm@redhat.com>

	* reorg.c (relax_delay_slots): Move declaration of "trial_seq"
	above the conditional, and convert the check on GET_CODE to a
	dyn_cast, so that "trial_seq" is available as an rtx_sequence * in
	the conditional.  Simplify the conditional by using methods of
	"trial_seq".

From-SVN: r214969