FileZilla has released another new version, 3.3.4. This is a minor update, but unfortunately, it adds one new optional dependency: tinyxml, a XML parser. In case you don't have this package, you can use builtin package by adding --with-tinyxml=builtin parameter in the configure script.
My updated SlackBuild script for FileZilla has been approved and you can get it to update your FileZilla installation to 3.3.4. You can also get tinyxml in SlackBuilds.