[reactos] 06/06: [APPHELP] Prevent a nullptr dereference

[Mark Jansen]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=e984cabad211bc70c7495…

commit e984cabad211bc70c749571e0d8507e542936d52
Author:     Mark Jansen <mark.jansen(a)reactos.org>
AuthorDate: Thu Jan 3 22:17:54 2019 +0100
Commit:     Mark Jansen <mark.jansen(a)reactos.org>
CommitDate: Sat Jan 5 13:11:36 2019 +0100

    [APPHELP] Prevent a nullptr dereference
---
 dll/appcompat/apphelp/hsdb.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/dll/appcompat/apphelp/hsdb.c b/dll/appcompat/apphelp/hsdb.c
index 62cd92fd05..f04312e034 100644
--- a/dll/appcompat/apphelp/hsdb.c
+++ b/dll/appcompat/apphelp/hsdb.c
@@ -1,10 +1,10 @@
 /*
  * PROJECT:     ReactOS Application compatibility module
- * LICENSE:     GPL-2.0+ (https://spdx.org/licenses/GPL-2.0+)
+ * LICENSE:     GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
  * PURPOSE:     Shim matching / data (un)packing
  * COPYRIGHT:   Copyright 2011 André Hentschel
  *              Copyright 2013 Mislav Blaževic
- *              Copyright 2015-2018 Mark Jansen (mark.jansen(a)reactos.org)
+ *              Copyright 2015-2019 Mark Jansen (mark.jansen(a)reactos.org)
  */
 
 #define WIN32_NO_STATUS
@@ -416,8 +416,11 @@ HSDB WINAPI SdbInitDatabase(DWORD flags, LPCWSTR path)
  */
 void WINAPI SdbReleaseDatabase(HSDB hsdb)
 {
-    SdbCloseDatabase(hsdb->pdb);
-    SdbFree(hsdb);
+    if (hsdb)
+    {
+        SdbCloseDatabase(hsdb->pdb);
+        SdbFree(hsdb);
+    }
 }
 
 /**