[reactos] 01/01: [SHELL32] Make "Unable to get notification window" quiet

[Katayama Hirofumi MZ]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=2a6bccb4ce84092f4725e…

commit 2a6bccb4ce84092f4725e7bd64e33f09941522ea
Author:     Katayama Hirofumi MZ <katayama.hirofumi.mz(a)gmail.com>
AuthorDate: Sat Apr 11 08:45:23 2020 +0900
Commit:     Katayama Hirofumi MZ <katayama.hirofumi.mz(a)gmail.com>
CommitDate: Sat Apr 11 08:45:23 2020 +0900

    [SHELL32] Make "Unable to get notification window" quiet
    
    CORE-13950
---
 dll/win32/shell32/shelldesktop/CChangeNotify.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/dll/win32/shell32/shelldesktop/CChangeNotify.cpp
b/dll/win32/shell32/shelldesktop/CChangeNotify.cpp
index 34c11809381..af4825cdaf8 100644
--- a/dll/win32/shell32/shelldesktop/CChangeNotify.cpp
+++ b/dll/win32/shell32/shelldesktop/CChangeNotify.cpp
@@ -45,6 +45,12 @@ DoGetNewDeliveryWorker(void)
         return s_hwndNewWorker;
 
     HWND hwndShell = GetShellWindow();
+    if (hwndShell == NULL)
+    {
+        TRACE("GetShellWindow() returned NULL\n");
+        return NULL;
+    }
+
     HWND hwndWorker = (HWND)SendMessageW(hwndShell, WM_GETDELIWORKERWND, 0, 0);
     if (!IsWindow(hwndWorker))
     {