explorer: Only try to destroy the IShellWindows object if it exists.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=52494Signed-off-by: Alex Henrie <alexhenrie24@gmail.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

explorer: Only try to destroy the IShellWindows object if it exists.
adda27cd · Alex Henrie · Alexandre Julliard · 045f50a7 · adda27cd
Commit adda27cd authored Jan 30, 2022 by Alex Henrie Committed by Alexandre Julliard Feb 02, 2022
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Showing with 5 additions and 2 deletions

explorer.c programs/explorer/explorer.c +5 -2

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--- a/programs/explorer/explorer.c
+++ b/programs/explorer/explorer.c
@@ -671,8 +671,11 @@ static LRESULT CALLBACK explorer_wnd_proc(HWND hwnd, UINT uMsg, WPARAM wParam, L
    switch(uMsg)
    {
    case WM_DESTROY:
-        IShellWindows_Revoke(info->sw, info->sw_cookie);
-        IShellWindows_Release(info->sw);
+        if(info->sw)
+        {
+            IShellWindows_Revoke(info->sw, info->sw_cookie);
+            IShellWindows_Release(info->sw);
+        }

        IExplorerBrowser_Unadvise(browser,info->advise_cookie);
        IExplorerBrowser_Destroy(browser);