walk_hls: replace spaces with tabs

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
walk_hls: fix warning: unused parameter 'context' [-Wunused-parameter]

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
dvbtee: remove unneeded code when USE_LINUXTV is unset

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