Fix recent changes related to USABLE_SIGIO

* src/process.c (wait_reading_process_output) [WINDOWSNT]:
* src/keyboard.c (handle_async_input) [DOS_NT]: Ifdef away the
code that is not needed on MS-Windows.  (Bug#50403) (Bug#51820)

1 files changed, 1 insertions, 1 deletions

diff --git a/src/process.c b/src/process.c
index 808bf6f1ff9..a00426795b8 100644
--- a/src/process.c
+++ b/src/process.c
@@ -5588,7 +5588,7 @@ wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd,
             timeout = make_timespec (0, 0);
 #endif
 
-#ifndef USABLE_SIGIO
+#if !defined USABLE_SIGIO && !defined WINDOWSNT
           /* If we're polling for input, don't get stuck in select for
              more than 25 msec. */
           struct timespec short_timeout = make_timespec (0, 25000000);