[EME] Add NULL protections in SourceBuffer and MediaSource.
Created attachment 226770 [details] Patch
efl-wk2 failed with "c++: internal compiler error: Killed (program cc1plus)" against InspectorController. Unrelated.
Comment on attachment 226770 [details] Patch Clearing flags on attachment: 226770 Committed r165751: <http://trac.webkit.org/changeset/165751>
All reviewed patches have been landed. Closing bug.