Crashing when opening a filtered thread

[Haxim]

If in the app settings you have post categories filtered out, and your search results returns a post from a filtered out thread, clicking the post will crash the app when it attempts to load the filtered thread.

[patch-e]

This is actually already resolved indirectly with the work that I did to add the URL scheme. It pops an alert view indicating that the post falls outside filters in Settings.