[newlib-cygwin] Cygwin: pty: Speed up a little hooked Win32 API for pseudo console.

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=bddb018e10e90ea300537d5a13999558b7dce476

commit bddb018e10e90ea300537d5a13999558b7dce476
Author: Takashi Yano <takashi.yano@nifty.ne.jp>
Date:   Wed Sep 4 10:44:24 2019 +0900

    Cygwin: pty: Speed up a little hooked Win32 API for pseudo console.
    
    - Some Win32 APIs are hooked in pty code for pseudo console support.
      This causes slow down. This patch improves speed a little.

Diff:
---
 winsup/cygwin/fhandler_tty.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/winsup/cygwin/fhandler_tty.cc b/winsup/cygwin/fhandler_tty.cc
index 4dbe96b..94ef2f8 100644
--- a/winsup/cygwin/fhandler_tty.cc
+++ b/winsup/cygwin/fhandler_tty.cc
@@ -155,7 +155,9 @@ DEF_HOOK (PeekConsoleInputW);
 #define CHK_CONSOLE_ACCESS(h) \
 { \
   DWORD dummy; \
-  if (!isHybrid && GetConsoleMode (h, &dummy)) \
+  if (!isHybrid \
+      && GetFileType (h) == FILE_TYPE_CHAR \
+      && GetConsoleMode (h, &dummy)) \
     { \
       isHybrid = true; \
       set_switch_to_pcon (); \