hush: fix two redirection testcase failures

function                                             old     new   delta
save_fds_on_redirect                                 183     256     +73
fcntl_F_DUPFD                                          -      46     +46
restore_redirects                                     74      96     +22
xdup_and_close                                        51      72     +21
setup_redirects                                      196     200      +4
hush_main                                            988     983      -5
static.C                                              12       -     -12
run_pipe                                            1595    1551     -44
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 4/2 up/down: 166/-61)           Total: 105 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/shell/hush_test/hush-redir/redir3.right b/shell/hush_test/hush-redir/redir3.right
index fd641a8..e3c878b 100644
--- a/shell/hush_test/hush-redir/redir3.right
+++ b/shell/hush_test/hush-redir/redir3.right
@@ -1,3 +1,2 @@
 TEST
-./redir3.tests: line 4: 9: Bad file descriptor
-Output to fd#9: 1
+hush: can't duplicate file descriptor: Bad file descriptor
diff --git a/shell/hush_test/hush-redir/redir_to_bad_fd.right b/shell/hush_test/hush-redir/redir_to_bad_fd.right
index 43b8af2..936911c 100644
--- a/shell/hush_test/hush-redir/redir_to_bad_fd.right
+++ b/shell/hush_test/hush-redir/redir_to_bad_fd.right
@@ -1,2 +1 @@
-./redir_to_bad_fd.tests: line 2: 10: Bad file descriptor
-OK
+hush: can't duplicate file descriptor: Bad file descriptor