When we're flagging a protected scope to prevent jumps into the

shadow of a block expression with non-trivial destructed cleanups,
we should flag that in the enclosing function, not in the block
that we're about to pop.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154646 91177308-0d34-0410-b5e6-96231b3b80d8