Piotr Caban : winebus.sys: Don't do anything in udev_driver_unload if udev was not initialized.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: ef59d2d11f5aed1d0bd249e159c672df2c8ccc3d
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=ef59d2d11f5aed1d0bd249e159c672df2c8ccc3d

Author: Piotr Caban <piotr at codeweavers.com>
Date:   Fri Sep 27 12:37:44 2019 +0200

winebus.sys: Don't do anything in udev_driver_unload if udev was not initialized.

Signed-off-by: Piotr Caban <piotr at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/winebus.sys/bus_udev.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dlls/winebus.sys/bus_udev.c b/dlls/winebus.sys/bus_udev.c
index b72e6bf47d..6fa6efb7dc 100644
--- a/dlls/winebus.sys/bus_udev.c
+++ b/dlls/winebus.sys/bus_udev.c
@@ -1488,6 +1488,9 @@ void udev_driver_unload( void )
 {
     TRACE("Unload Driver\n");
 
+    if (!deviceloop_handle)
+        return;
+
     write(deviceloop_control[1], "q", 1);
     WaitForSingleObject(deviceloop_handle, INFINITE);
     close(deviceloop_control[0]);