Correct a sandbox violation that was fixed for macOS in Bug 196446, but not picked up for iOS.
<rdar://problem/51134351>
Created attachment 370804 [details] Patch
Comment on attachment 370804 [details] Patch Sigh.
Comment on attachment 370804 [details] Patch Clearing flags on attachment: 370804 Committed r245835: <https://trac.webkit.org/changeset/245835>
All reviewed patches have been landed. Closing bug.