When we generate a redeclaration for an
elaborated-type-specifier, place it in the correct
context.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@208799 91177308-0d34-0410-b5e6-96231b3b80d8
Amending r208783 based on a suggestion by David Blaikie.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@208800 91177308-0d34-0410-b5e6-96231b3b80d8