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

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 485aed9f1c0353597d8b5ebecf5599bfc6573d68
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=485aed9f1c0353597d8b5ebecf5599bfc6573d68

Author: Piotr Caban <piotr at codeweavers.com>
Date:   Fri Sep 27 12:37:48 2019 +0200

winebus.sys: Don't do anything in iohid_driver_unload if iohid 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_iohid.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dlls/winebus.sys/bus_iohid.c b/dlls/winebus.sys/bus_iohid.c
index cda77e3011..f0f10ca98e 100644
--- a/dlls/winebus.sys/bus_iohid.c
+++ b/dlls/winebus.sys/bus_iohid.c
@@ -416,6 +416,10 @@ NTSTATUS iohid_driver_init(void)
 void iohid_driver_unload( void )
 {
     TRACE("Unloading Driver\n");
+
+    if (!run_loop_handle)
+        return;
+
     IOHIDManagerUnscheduleFromRunLoop(hid_manager, run_loop, kCFRunLoopDefaultMode);
     CFRunLoopStop(run_loop);
     WaitForSingleObject(run_loop_handle, INFINITE);