splitmuxsink: Fix memory leak
Fix a leak of the buffer info struct when reaching EOS without data on the reference input.
Should fix test failures like https://gitlab.freedesktop.org/meh/gstreamer/-/jobs/25213244
Fix a leak of the buffer info struct when reaching EOS without data on the reference input.
Should fix test failures like https://gitlab.freedesktop.org/meh/gstreamer/-/jobs/25213244