Recommit r334887: [SmallSet] Add SmallSetIterator.

Updated to make sure we properly construct/destroy SetIter if it has a
non-trivial ctors/dtors, like in MSVC.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337818 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed