Verify requeue handling

If file is already filled, it's a requeue. In that case, don't grab
a new io_piece, we already filled the offsets in the io_u.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/verify.c b/verify.c
index f2ef107..6cbd0ad 100644
--- a/verify.c
+++ b/verify.c
@@ -143,6 +143,12 @@
 {
 	struct io_piece *ipo;
 
+	/*
+	 * this io_u is from a requeue, we already filled the offsets
+	 */
+	if (io_u->file)
+		return 0;
+
 	if (!list_empty(&td->io_hist_list)) {
 		ipo = list_entry(td->io_hist_list.next, struct io_piece, list);