[vlc-devel] upgrade in windows fails

[Roger Pack]

Sorry I couldn't post this to the forum, spamhaus didn't like my IP
with no easy way to work around it?

```
As a note the link to spamhaus is slightly incorrect:
Your IP 172.59.152.18 has been blocked because it is blacklisted. For
details please see http://www.spamhaus.org/query/bl?ip=172.59.152.18.
```

Anyway the report I had intended to send was

Hello, upgrading to 3.0.20 today I clicked "download installer" and
"execute" and the installer paused/hung with message "unable to update
libqt_plugin.dll"

Cheers!
-=roger