tests: Correct value of Seek.stop
tests: Correct value of Seek.stop

Pelagicore/Media-Manager-Rygel-patched,jku/rygel,Pelagicore/Media-Manager-Rygel-patched,jku/rygel,Pelagicore/Media-Manager-Rygel-patched,GNOME/rygel,luisbg/rygel,Tarnyko/rygel,GNOME/rygel,GNOME/rygel,Tarnyko/rygel