[JSC] InitializeEntrypointArguments should produce SpecCellCheck if FlushFormat is FlushedCell
Created attachment 361364 [details] Patch
<rdar://problem/47813087>
Created attachment 361365 [details] Patch
Created attachment 361366 [details] Patch
Comment on attachment 361366 [details] Patch r=me
Committed r241114: <https://trac.webkit.org/changeset/241114>