Jacek Caban (@jacek) commented about dlls/urlmon/zone_id.c:
- hfile = CreateFileW(file_name, GENERIC_READ | GENERIC_WRITE,
 FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_ALWAYS,FILE_ATTRIBUTE_NORMAL, NULL);- if (hfile == INVALID_HANDLE_VALUE)
 return HRESULT_FROM_WIN32(GetLastError());- CloseHandle(hfile);
 - if (remember)
 - {
 new_file_name = wcsdup(file_name);if (!new_file_name)return E_OUTOFMEMORY;if (This->save_file_name)
Same here, no need for the NULL check.