Unexpected ERROR if changing states while pushing a sticky event.
@ocrete
Submitted by Olivier Crête Link to original bug (#781000)
Description
Currently, if the downstream element is stopped or goes flushing while a sticky event is pushed downstream as caused by a buffer push, it will cause a castrophic failure as the gst_pad_push() will return GST_FLOW_ERROR.
I think it should return GST_FLOW_FLUSHING instead, so that it can be safely ignored if a flush caused it.