WaveShaperNode should not output silence when it has no input or when input is silence. It should still apply its curve to the silent input.
Created attachment 406722 [details] Patch
Committed r265765: <https://trac.webkit.org/changeset/265765> All reviewed patches have been landed. Closing bug and clearing flags on attachment 406722 [details].
<rdar://problem/67262554>