swift234

SILGen: Don't overrelease the for-each iteration value when break-ing.

We don't ever need to destroy_addr the iteration value buffer, because either the for loop exited normally because it's nil, or it exited by 'break' and it contains a stale 'Some' value that was consumed by the loop body. Fixes <rdar://problem/16687672>.

Swift SVN r16942