Original commit message from CVS: * ext/timidity/gsttimidity.c: (gst_timidity_loop): * ext/timidity/gstwildmidi.c: (gst_wildmidi_loop): * gst/tta/gstttaparse.c: (gst_tta_parse_loop): When driving the pipeline, also post an error when we get a not-linked flow return from downstream.