PR tree-opt/59924

        * tree-ssa-uninit.c (push_to_worklist): Don't re-push if we've
        already processed this node.
        (normalize_one_pred_1): Pass along mark_set.
        (normalize_one_pred): Create and destroy a pointer_set_t.
        (normalize_one_pred_chain): Likewise.

From-SVN: r207442