reinterpret_cast to reference of a bit-field is not allowed.

Fixes rdar://9202628 & http://llvm.org/PR9564.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130024 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed