Work around the way that Flash tries to load crossdomain files.

It's pretty broken if you are trying to fetch a query string from root.
URLs look like:

http://tools.lumosity.com:9988/?locale=de%2DDE&fileUri=%2Fflash%5Fgames%2Fpenguin%5Fpursuit%2Ftext%2Exml&retrievalType=pending/crossdomain.xml