[PATCH 0/1] MR8945: opcservices: IOpcPart::GetContentType takes LPWSTR, not BSTR.

[Yuxuan Shui (＠yshui)]

And the WSTR it returns should be freed by CoTaskMemFree, as per [Microsoft's documentation](https://learn.microsoft.com/en-us/windows/win32/api/msopc/nf-msopc-iopcpart-...).

Found by ASan.