Guard against compile failures of the default libraries
Created attachment 431920 [details] Patch
<rdar://problem/79037623>
Note that there are important steps to take when updating ANGLE. See https://trac.webkit.org/wiki/UpdatingANGLE
Committed r279212 (239098@main): <https://commits.webkit.org/239098@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 431920 [details].