parse: fix warning: private field 'stream_time' is not used [-Wunused-private-field]

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
hlsfeed: fix warning: private field 'toplevel' is not used [-Wunused-private-field]

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>