opendns/dnscrypt-win-client — pull request #1 by AndreMommert (2012-05-11 14:25:57+00:00)
Title: Update - Check if .msi file already exists

I hope it's my first successful contribution to the dnscrypt-win-client.
The change is very small and I have tested it.

Update.cs
* Added check if .msi file already exists.