Let's use `unset JSC_useBlah` to clear the environment variables instead of `export JSC_useBlah=`
Created attachment 342790 [details] patch
Comment on attachment 342790 [details] patch r=me
Comment on attachment 342790 [details] patch Clearing flags on attachment: 342790 Committed r232867: <https://trac.webkit.org/changeset/232867>
All reviewed patches have been landed. Closing bug.
<rdar://problem/41151943>