[PATCH v2 1/1] joy.cpl: Set devnotify to NULL after it got unregistered (ASan).

[Bernhard Übelacker]

From: Bernhard Übelacker

This is to avoid a crash in UnregisterDeviceNotification when
called a second time for the same handle.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=58050
---
 dlls/joy.cpl/dinput.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dlls/joy.cpl/dinput.c b/dlls/joy.cpl/dinput.c
index 8eefbbbe3f3..a536fd167a1 100644
--- a/dlls/joy.cpl/dinput.c
+++ b/dlls/joy.cpl/dinput.c
@@ -806,7 +806,9 @@ INT_PTR CALLBACK test_di_dialog_proc( HWND hwnd, UINT msg, WPARAM wparam, LPARAM

case PSN_RESET:
         case PSN_KILLACTIVE:
+            if (!devnotify) break;
             UnregisterDeviceNotification( devnotify );
+            devnotify = NULL;
             SetEvent( thread_stop );
             /* wait for the input thread to stop, processing any WM_USER message from it */
             while (MsgWaitForMultipleObjects( 1, &thread, FALSE, INFINITE, QS_ALLINPUT ) == 1)