[newlib-cygwin] Cygwin: pty: Fix bad file descriptor error in some environment.

[Ken Brown]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=6983433f8e097449a7182def4c4393306e9a9a46

commit 6983433f8e097449a7182def4c4393306e9a9a46
Author: Takashi Yano <takashi.yano@nifty.ne.jp>
Date:   Sun Sep 15 13:05:51 2019 +0900

    Cygwin: pty: Fix bad file descriptor error in some environment.
    
    - The bad file descriptor problem reported in:
      https://cygwin.com/ml/cygwin-patches/2019-q3/msg00104.html
      was recurring. Fixed again.

Diff:
---
 winsup/cygwin/fhandler_tty.cc | 2 --
 1 file changed, 2 deletions(-)

diff --git a/winsup/cygwin/fhandler_tty.cc b/winsup/cygwin/fhandler_tty.cc
index 9aa8326..1b1d544 100644
--- a/winsup/cygwin/fhandler_tty.cc
+++ b/winsup/cygwin/fhandler_tty.cc
@@ -857,8 +857,6 @@ fhandler_pty_slave::open (int flags, mode_t)
       pcon_attached_to = get_minor ();
       init_console_handler (true);
     }
-  else if (pcon_attached_to < 0)
-    fhandler_console::need_invisible ();
 
   set_open_status ();
   return 1;