cryptui: Check NULL ptr differently (Coverity).

dlls/cryptui/main.c

@@ -1076,10 +1076,9 @@ static LRESULT CALLBACK cert_mgr_dlg_proc(HWND hwnd, UINT msg, WPARAM wp,
         HWND tab = GetDlgItem(hwnd, IDC_MGR_STORES);
 
         data = HeapAlloc(GetProcessHeap(), 0, sizeof(struct CertMgrData));
-        if (data)
-        {
-            data->imageList = ImageList_Create(16, 16, ILC_COLOR4 | ILC_MASK,
-             2, 0);
+        if (!data)
+            return 0;
+        data->imageList = ImageList_Create(16, 16, ILC_COLOR4 | ILC_MASK, 2, 0);
         if (data->imageList)
         {
             HBITMAP bmp;
@@ -1094,7 +1093,7 @@ static LRESULT CALLBACK cert_mgr_dlg_proc(HWND hwnd, UINT msg, WPARAM wp,
         }
         SetWindowLongPtrW(hwnd, DWLP_USER, (LPARAM)data);
         data->title = pCryptUICertMgr->pwszTitle;
-        }
+
         initialize_purpose_selection(hwnd);
         add_cert_columns(hwnd);
         if (pCryptUICertMgr->pwszTitle)