[MSE] Seeks to currentTime=0 will fail if currentTime is already 0.
<rdar://problem/30988403>
Created attachment 306295 [details] Patch
Comment on attachment 306295 [details] Patch Clearing flags on attachment: 306295 Committed r214959: <http://trac.webkit.org/changeset/214959>
All reviewed patches have been landed. Closing bug.