base: simplify process_event()
base: simplify process_event()

drop will always return false, and we never return errors.

No functional changes.

Signed-off-by: Felipe Contreras <de77a8b9cd239b204c19c52ed62e48ab47243362@nokia.com>

community-ssu/gst-dsp,community-ssu/gst-dsp,community-ssu/gst-dsp