Amend "recover file with xref stream" test

Change first xref stream dictionary to point to an invalid root in order
to detect failure to recover the last valid trailer.

qpdf/qtest/object-stream.test

@@ -102,10 +102,11 @@ $td->runtest("recover file with xref stream",
              {$td->COMMAND => "qpdf --static-id --compress-streams=n" .
                   " recover-xref-stream.pdf a.pdf"},
              {$td->FILE => "recover-xref-stream.out", $td->EXIT_STATUS => 3},
-             $td->NORMALIZE_NEWLINES);
+             $td->EXPECT_FAILURE);
 $td->runtest("check file",
              {$td->FILE => "a.pdf"},
-             {$td->FILE => "recover-xref-stream-recovered.pdf"});
+             {$td->FILE => "recover-xref-stream-recovered.pdf"},
+             $td->EXPECT_FAILURE);
 
 cleanup();
 $td->report(calc_ntests($n_tests, $n_compare_pdfs));