[reactos] 01/01: [WIN32K:ENG] In EngLockDriverObj, properly return NULL when locking failed

[Jérôme Gardou]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=e70df4c633ef7ba78c5e0…

commit e70df4c633ef7ba78c5e02ccb4948c7bfe4f9be2
Author:     Jérôme Gardou <jerome.gardou(a)reactos.org>
AuthorDate: Wed Jun 9 18:27:12 2021 +0200
Commit:     Jérôme Gardou <jerome.gardou(a)reactos.org>
CommitDate: Wed Jun 9 18:27:12 2021 +0200

    [WIN32K:ENG] In EngLockDriverObj, properly return NULL when locking failed
    
    CORE-15958
---
 win32ss/gdi/eng/driverobj.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/win32ss/gdi/eng/driverobj.c b/win32ss/gdi/eng/driverobj.c
index f1987df6afa..1a4d772864e 100644
--- a/win32ss/gdi/eng/driverobj.c
+++ b/win32ss/gdi/eng/driverobj.c
@@ -120,7 +120,7 @@ EngLockDriverObj(
     pedo = DRIVEROBJ_TryLockObject(hdo);
 
     /* Return pointer to the DRIVEROBJ structure */
-    return &pedo->drvobj;
+    return pedo ? &pedo->drvobj : NULL;
 }