Incorrect url redirection from transitions modal window

[anonymous-matomo-user]

I got the error, after ho to center link of page in transitions modal window:
Please check the &url= parameter: it should to be a valid URL

How to reproduce:

• Open transitions for any record
• Move to another page in the that transitions
• Click to centered link for go to the concrete page in web-site

ps: Without moving to another page in that transitions window, link opened is normal.

version of piwik: 2.0.3

[mattab]

In 32b6778: Fixes #4525 thanks for the report