Fix WINDOWSNT/DOS_NT build

Recent changes in sysdep.c and emacsclient unnecessarily
removed useful code from DOS_NT builds.  This changeset
reinstates that code.
* nt/inc/ms-w32.h (tcdrain): Redirect to _commit.
(fdatasync): No need to redirect anymore.

* lib-src/emacsclient.c (flush_stdout): Don't avoid calling
tcdrain on DOS_NT platforms.

* src/sysdep.c (reset_sys_modes): Don't ifdef away the call to
tcdrain on DOS_NT platforms.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/sysdep.c b/src/sysdep.c
index b054839795b..9901d6a089e 100644
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -1519,11 +1519,11 @@ reset_sys_modes (struct tty_display_info *tty_out)
   if (tty_out->terminal->reset_terminal_modes_hook)
     tty_out->terminal->reset_terminal_modes_hook (tty_out->terminal);
 
-#ifndef DOS_NT
   /* Avoid possible loss of output when changing terminal modes.  */
   while (tcdrain (fileno (tty_out->output)) != 0 && errno == EINTR)
     continue;
 
+#ifndef DOS_NT
 # ifdef F_SETOWN
   if (interrupt_input)
     {