Fix the RygelHTTPGetTest.
Fix the RygelHTTPGetTest.

No need to start async this.client.run () again - it is already done
in start_next_test_request (). This was causing failures on Fedora.

https://bugzilla.gnome.org/show_bug.cgi?id=680496

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