[PATCH] chardev/char-win-stdio.c: restore old console mode

[songziming]

Hi

I've updated the patch.

Now it only reset mode if handle is valid.

Signed-off-by: Ziming Song <s.ziming@hotmail.com>

---
 chardev/char-win-stdio.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/chardev/char-win-stdio.c b/chardev/char-win-stdio.c
index 1a18999..13325ca 100644
--- a/chardev/char-win-stdio.c
+++ b/chardev/char-win-stdio.c
@@ -33,6 +33,7 @@
 struct WinStdioChardev {
     Chardev parent;
     HANDLE  hStdIn;
+    DWORD   dwOldMode;
     HANDLE  hInputReadyEvent;
     HANDLE  hInputDoneEvent;
     HANDLE  hInputThread;
@@ -159,6 +160,7 @@ static void qemu_chr_open_stdio(Chardev *chr,
     }
 
     is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
+    stdio->dwOldMode = dwMode;
 
     if (is_console) {
         if (qemu_add_wait_object(stdio->hStdIn,
@@ -221,6 +223,9 @@ static void char_win_stdio_finalize(Object *obj)
 {
     WinStdioChardev *stdio = WIN_STDIO_CHARDEV(obj);
 
+    if (stdio->hStdIn != INVALID_HANDLE_VALUE) {
+        SetConsoleMode(stdio->hStdIn, stdio->dwOldMode);
+    }
     if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
         CloseHandle(stdio->hInputReadyEvent);
     }
-- 
2.34.1.windows.1