re PR middle-end/71619 (ICE: in predict_loops, at predict.c:1772 with --param=max-predicted-iterations=0)

Fix PR middle-end/71619

	PR middle-end/71619
	* predict.c (predict_loops): Revert the hunk that was removed
	in r237103.
	* gcc.dg/pr71619.c: New test.

From-SVN: r237730